Save
Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know
Remaining cards (0)
Know
0:00
share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Chem:Lesson1

Matter and Energy

QuestionAnswer
What is an Element? a pure substance that cannot be separated into simpler substances by physical or chemical means
What is a compound? It is a combination of two or more different elements that are chemically combined
What is a mixture? A mixture is a combination of two or more pure substances in which each pure substance keeps its individual chemical properties.
Difference between Homogenous and Heterogeneous mixtures. Homogenous:When the 2 substances are equally distributed. ex. Lemonade, Salt Water Heterogeneous: When the components are not equally distributed. Ex. Italian Dressing
Filtration Filtration is a technique that separates the components of a mixture using a porous barrier.
Distillation When you boil two substances to seperate them or to boil a substance out of the mixture.
Crystallization a separation technique that results in the formation of pure, solid particles of a substance that had been dissolved in a solution.
Chromatography is a technique that separates the components of a mixture on the basis of the tendency of each component to travel across the surface of another material.
What is Matter and what four states does it happen in? anything that has mass and takes up space. It can be in a solid form, liquid, gas, or plasma.
What is weight? weight is a measure of the gravitational pull on matter
Physical Properties of a substance Extensive: Mass, Density, Melting Point, Boiling Point, Temperature Intensive: Color, Hardness, Malleability, Conductivity, Odor
Chemical Properties Potential to Rust, Potential to Explode, Potential to react with acid, Potential to decompose
Chemical Properties Potential to Rust, Potential to Explode, Potential to react with acid, Potential to decompose
physical change A change that does not affect the basic nature of a substance
Chemical Properties Potential to Rust, Potential to Explode, Potential to react with acid, Potential to decompose
physical change A change that does not affect the basic nature of a substance. Ex: Melting Ice
Chemical Change A change that affects the basic nature of a substance.
Potential Energy measures the distance an object is from the earth’s surface
Kinetic Energy the energy of motion
What is The Law of Conservation The law of conservation of energy states that energy cannot be created or destroyed; the total amount of energy in the universe is constant
Created by: Sydbriggs
 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards