An element can be separated into simpler substances by

a. physical means

b. chemical means

c. both physical and chemical means

d. neither physical nor chemical means

Answers

Answer 1
i think it’s C because they either have chemical properties or physical properties.
Answer 2
Your answer is C! So happy to help you!!!

Related Questions

Buffalo, New York is a city located near a large lake called Lake Erie. Buffalo receives an average of nearly 94 inches of snowfall a year. Using your knowledge of temperature and what you have read, explain why Buffalo receives so much snow.

Answers

Answer: it is further away from the equator

Explanation:

The simple answer to why Buffalo receives so much snow, and why it is is often confined to a specific area, is lake effect snow.  Lake effect snow occurs most frequently during cold snaps in early winter. It happens when the transfer of heat and moisture from the warm waters of the Great Lakes to the cold air creates a shallow layer of atmospheric instability, causing air to rise quickly. As the moisture rises and condenses, it begins to fall as snow–and often, a lot of snow. Depending on which direction the winds are blowing, areas in the snow belts near the Great Lakes (including Buffalo) can see several feet of snow in just a few days.  According to the National Weather Service, in the Buffalo area, when cold air from Canada moves over the still unfrozen, relatively warm Great Lakes, the lake moisture and instability from this temperature contrast build one or more bands of snow. These bands are then deposited over locations downwind from the lakes, with some areas receiving much more snow than others, depending on their location and the wind direction.

How large is a typical animal or plant cell? A. 1-100 millimeters B. 1 meter C. 10-100 nanometers D. 10-100 micrometers WILL MARK BRAINLEST Science

Answers

D.) 10-100 micrometers

Answer:

10-100 micrometers

Explanation:

Which surface is most likely to create an echo?
a room with hard, flat walls
a room with hard, bumpy walls
a room covered in soft, wavy curtains
a room padded with soft, flat cushions

Answers

the answer is A. if a sound meets a soft surface like C or D they will be absorbed and wouldn’t bounce back. the answer would have to be either A or B. But the answer is A because the wave remains more intact when it hits a smooth surface.

A room with hard, flat walls surface is most likely to create an echo. Hence option A is correct.

What is echo?

Echo is defined as a recurrence of sound caused by sound waves being reflected off of a wall, mountain, or other obstruction. Bats, dolphins, and fishermen all use echoes to find objects or obstructions. To find an obstruction, they are also utilized in SONAR (Sound navigation and ranging) and RADAR (Radio detection and ranging).

Buildings made of glass, metal, and concrete, the brick and metal interior of a warehouse, marble floors and buildings, or, if the room is designed in such a way that the acoustics produce an echo, plastered and painted interior walls, are examples of man-made materials that are smooth enough to produce an echo.

Thus, a room with hard, flat walls surface is most likely to create an echo. Hence option A is correct.

To learn more about echo, refer to the link below:

https://brainly.com/question/9527413

#SPJ2

help me fastttttttttttt

Answers

Answer:

True is my answer

#Carry on learning#:)

Answer:

True

Explanation:

Bc u said it already the answer

identify the for of energy

(A)thermal
(B)kinetic
(C)chemical
(D)electrical

Answers

Answer:

C Chemical Energy

Explanation:

food gives us chemical energy which may be transformed to other later..

please mark me brainliest

C) chemical energy

Description
chemical energy, Energy stored in the bonds of chemical compounds

A dog whistle has a high frequency. What can you infer about the dog whistle?

It would be very loud.

It would have a high pitch.

It would have a high amplitude.

It would have a long wavelength.

Answers

Answer: It would have a high pitch.

Explanation: since the whistle has a high frequency, I can infer that it will have a high pitch.

Answer:

it would have a high pitch

Explanation:

like if u take a hearing test the sounds are usually high pitch

Which method of galaxy formation is expected to dominate far in the future?(1 point)

A) primordial collapse
B) merging
C) slow evolution
D) spreading

Answers

Answer:

its c) slow evolution

Explanation:

I took to qc

The forces exerted on an object are shown.
help asap!!!!! (i will mark brainliest)



A box has an arrow pointing down labeled F and an arrow pointing up labeled 5 N.


Which of the following happens when F is less than 5 N?

The object moves up.

The object moves down.

Balanced forces keep the object stationary.

Balanced forces keep the object's speed constant.

Answers

Answer:

The object moves up.

Explanation:

I think that's the answer because since F was up that would cause 5 N . To go up.

Tell me if I'm wrong, plz :D

Answer:

The object moves up

1) Would a person's weight on Earth be the same as it would be on the moon? Explain using the key words weight, mass & gravity.

Answers

Answer:

The force gravity exerts on a person determines the person's weight. Even though your mass would be the same on Earth and the moon, if you weigh 132 pounds (60 kilograms) on Earth, you would weigh about 22 pounds (10 kilograms) on the moon.

Explanation:

Show your appreciation by marking this as brainliest.

Can you make some notes related to these texts?

Answers

Answer

Explanation:

ddssfdxfghfchgj

Picture #1:
• Acceleration: change in velocity compared with the time it takes to change
- Average Acceleration: (Final Velocity - Starting Velocity) / Time
• Velocity: expressed in meters per seconds (m/s)
• Time: expressed in seconds (s)
• Acceleration is measured in meters per second per second
- meters per second squared (m/s²)

Picture #2:
• Acceleration is a vector
- magnitude
- direction
• Acceleration: increases and decreases in speed
• Positive Acceleration: increase in speed
- sliding down from a hill
- small velocity -> large velocity
• Negative Acceleration: decrease in speed
- car slowing then
- high velocity -> low velocity
- initial velocity is larger than final velocity
- (v2 - v1) will be negative
- acceleration “a = (v2 - v1) / t” will be negative
• Acceleration and velocity (rate of motion) in the same direction = speed will increase.
• Acceleration and velocity in opposing directions = speed will decrease

Picture #3:
• Acceleration: rate at which velocity changes
• Velocity is a vector: has magnitude & direction
- magnitude or direction changes = the velocity changes
• Object accelerates speed = direction of motion or both magnitude and direction changes
• Acceleration depends on amount of time for the change to take place and how much velocity changes
- Small change in velocity can be a large change in acceleration if the change occurred quickly.
- Large change in velocity can be a small change in acceleration if the change occurred slowly.
- Increasing speed by 5 m/s in 5 seconds is smaller acceleration to increase speed by 5 m/s in 1 second.

Picture #4:
• An object changing the direction of motion experiences acceleration even when not speeding up or slowing down
• An object is always turning.
• Centripetal Acceleration: acceleration in circular mode.

HELPPPPPPPPP
HI PLSPLS

Answers

hehehebfbfbfnfnffnbdvdvdvfbdbffp
True! Jajsjsjsnsjsjskskskskskskdkzkxjdueidixiidd

think about the statement "every decision has an environmental impact"?what decision do you make that add carbon dioxide to the environment?what decision do you make that would add less carbon dioxide to the environment then you currently add?

Answers

Explanation:

Certain actions and/or their method can affect the environment, such as leaving the sink on while brushing your teeth or not turning off a light when you leave the room. I personally make decisions to prevent my association with Greenhouse gases by turning off lights when I leave a room, using minimal water, recycling, etc.

Answer:

Answers may vary. View explanation.

Explanation:

There are every day decisions that may add carbon dioxide to the environment.  

Problems:

Burning of fossils fuels.  Example: Using cars as transportation. The average car releases around 4.6 metric tons of carbon dioxide per year.Deforestation. Carbon dioxide is released from dead organisms such as trees. Example: As of 2021, 15 billion trees are lost to deforestation.

Solutions:

Instead of taking your car to work or school, carpool with a friend. Riding your bike and taking the bus are also good solutions that help minimize carbon dioxide releases.In spare your time, grab a couple of friends and plant some trees! Even planting just a few trees is a great start to help the planet.

Have a great day!

Which part of the ear converts vibrations into nerve impulses?
cochlea
auditory nerve
outer ear
eardrum

Answers

Answer:

cochlea

Explanation:

The cochlea is filled with a fluid that moves in response to the vibrations from the oval window. As the fluid moves, 25,000 nerve endings are set into motion. These nerve endings transform the vibrations into electrical impulses that then travel along the eighth cranial nerve (auditory nerve) to the brain.

:)

Cochlea

The cochlea is filled with a fluid that moves in response to the vibrations from the oval window. As the fluid moves, 25,000 nerve endings are set into motion. These nerve endings transform the vibrations into electrical impulses that then travel along the eighth cranial nerve (auditory nerve) to the brain.

Which statement below describes a physical property of a substance?

A. Helium gas floats because is less air dense than air


B. Sulfuric acid is a toxic liquid

C. Iron rusts when exposed to water and air

D. Sodium metal explodes when exposed to water

Answers

Answer:

A

Explanation:

Because density is a physical property and the rest are all chemical properties

Answer:

A

Explanation:

heeeeeeeeeeeeeeeeeellllllllllllllllllllllllppppp

Answers

Answer:

Atomic number = 42

Chemical symbol = Mo

Number of protons = 42

Atomic mass = 96

Number of electrons = 42

Number of valence electrons = 1

number of electrons in n=3 shell = 8

Number of neutrons = 54

hope this helps :)

When an Alka-Seltzer® tablet is put in water, there is a chemical change because there are bubbles produced. The Alka-Seltzer® tablet slowly disappears over time. What would speed up the chemical change?

Adding more water would cause the chemical change to speed up.
Changing the color of the tablet would cause the chemical change to speed up.
Decreasing the temperature of the water would cause the chemical change to speed up.
Increasing the temperature of the water would cause the chemical change to speed up.

Answers

it’s either increasing the temp or water. the temp increasing adds more energy bc heat = more energy. so i would go w increasing temp

HELP!!!!!

Physical Models Activity

You have explored some interesting, informative, and amusing examples of models. Now it's time to get creative and make your own model. Here is the requirement checklist for your model:

✔ Model types can include drawings, diagrams, physical models, virtual simulations, or videos.
✔ Models must be created by you, not something selected from an online or outside source.
✔ Submit a presentation, picture, video, or screenshot of your model.
✔ Submit a one-paragraph summary describing the topic you chose, your model, what it represents, how you made it, and the specific science involved. It is important that you are using science terminology and are accurate.
Now that you know how to create and submit your model, you will need to choose a topic for your model. Choose one of the three topics listed below. Select each topic for an overview.

Conservation of Mass
Atomic Theory
Thermal Energy

Answers

Answer:

Thermal Energy-Explore the effects of thermal energy. Model how adding or removing thermal energy affects motion in particles in a pure substance, such as water, or in a chemical reaction.

Explanation:

Answer: okay so!! I picked Atomic Energy, and i found some models- I'm not entirely sure what type of model this is supposed to be, so I found what i think it is. I hope I'm not late!!

Explanation:

Alright here's the description:Atomic optimism, from the History of Atomic Energy Collection.

so, i thought you could do a voice over (2:00 to 3:00 minutes long) of what you think the meaning of this is, or write a short summary of it.

(Of course you would have to crop this because,it wouldn't let me send it in cropped. I hope this helped!

The atomic number of an element:
Question 2 options:

Tells you the mass of the atom

Tells you the number of energy levels there are around the atom

Tells you the identity of the atom

Tells you how many valence electrons the atom has

Answers

The answer would be C, it tells you the identity of the atom.

Use the information and data from the tests to make a recommendation for which blanket the government should choose. In your response include scientific reasoning to support your recommendation.
Reasoning: Explain using scientific principles and connect the test results to the criteria and constraints.

Answers

Answer:

through the day yesterday and I was really hoping to see you and

“name each season from the diagram above.” PLEASE HELP I WASNT AT SCHOOL.

Answers

Answer:

to be honest I don't know

Explanation:

Answer:

A- Summer            E- Winter

B- Spring               F- Fall

C- Winter              G- Summer

D- Autumn/Fall     H- Spring

Explanation:

*WARNING* I don't know for a fact but i think this is the answer

Identify the form of energy.



mechanical energy


chemical energy


radiant energy


electrical energy

Answers

Answer:

Mechanical energy

Explanation:

Your body is doing most of the work

Mechanical Energy

Explanation: The man’s leg is pushing down on the peddles (mechanical energy means to put something else in motion)

2) In the formula p=mv, identify the word that each letter stands for.

Answers

Answer:

p = momentum

m = mass

v = velocity

Hope this helps!

Mass if you use mass in the in situation

You are asked to determine the identity of an unknown liquid and can only measure one physical property. You freeze the liquid and record that the liquid turns into a solid at 0 degrees C. Which physical property does this demonstrate?

melting point

boiling point

freezing point

volume

Answers

It demonstrates the freezing point of the liquid. Hope this helps
freezing point since it turns solid at 0 degrees

when enough stress builds up in brittle rock, the rock breaks, causing a ___ to form

Answers

How do faults form? When enough stress builds up in rock then the rock breaks creating a fault. A normal fault occurs when rock is being pulled apart by tension; in this type of fault the hanging wall moves downward and the foot wall moves upward due to the tension in Earth's crust.

the answer is “a fault”

All of the following are forms of energy EXCEPT: A) heat B) friction C) light D) electrical

Answers

Answer:

Friction

Explanation:

Friction make heat energy its not a energy it self just a force

Answer:

Friction

Explanation:

Friction is only the resistance that one surface or object encounters when moving over another

What is the best description of how heat is transferred from deep in the earth to the surface?
a. Conduction brings hot magma up through the mantle toward the crust, where it cools and sinks.
b. Convection brings hot magma up through the mantle toward the crust, where it cools and sinks.
c. Convection brings hot magma up from the core to the crust, where it cools and sinks.
d. Conduction brings hot magma up from the core to the crust, where it cools and sinks.

Answers

Answer:

pretty sure it's C,

Explanation:

Mantle convection is the very slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior to the planet's surface. ... This hot added material cools down by conduction and convection of heat.

The answer is C hope this helped

When this candle is burned it seems to disappear over a period of time. In actuality, the candle is being converted to smoke,ash, and carbon dioxide, and the energy is being released as heat and light. This is an example of _____________.
A. Murphy's law


B. the law of conservation of mass


C. the law of chemical reactions


D. the law of nature

Answers

the answer is D the law of nature
Most likely C because the chemicals are interacting putting out the flame

True or False. The elements that make up the reactants must be present in the products.

Answers

Answer:

In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products. In a chemical reaction, only the atoms present in the reactants can end up in the products.

Explanation:

True or False. The elements that make up the reactants must be present in the products. , The answer is true!

What is the name of this unstable isotope from number 9?

Answers

Answer:

Xenon

Explanation:

Xenon is the unstable isotope element from number 9

PLEASE HELP SCIENCE SCIENCE HELP PLEASE PLEASE HELP SCIENCE SCIENCE HELP PLEASE PLEASE HELP SCIENCE SCIENCE HELP PLEASE PLEASE HELP SCIENCE SCIENCE HELP PLEASE PLEASE HELP SCIENCE SCIENCE HELP PLEASE PLEASE HELP SCIENCE SCIENCE HELP PLEASE PLEASE HELP SCIENCE SCIENCE HELP PLEASE PLEASE HELP SCIENCE SCIENCE HELP PLEASE PLEASE HELP SCIENCE SCIENCE HELP PLEASE PLEASE HELP SCIENCE SCIENCE HELP PLEASE PLEASE HELP SCIENCE

Answers

Answer:

AAAAAAAAAAAAAAAAAAAAAAAAA

Answer:

A. 1.67×10^-24

Explanation:

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