Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


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. Your email address is only used to allow you to reset your password. See 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
edit
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

Unit 4 Science Notes

TermDefinition
pure substance same composition throughout; examples are silver, gold, oxygen.
compound chemically combined, changes properties, set ratio; examples are water, carbon dioxide, sodium chloride.
mixture two substances physically combined, same identities, not in a set ratio.
heterogeneous mixture see different parts; examples are pizza toppings, trail mix, skittles.
homogeneous mixture looks the same throughout; examples are mustard, salt water.
solution very well mixed, small particles, homogeneous; examples are solid- alloy, liquid- kool-aid, gas- air.
alloy adds strength and resistance.
suspension type of mixture, particles are not the same, heterogeneous, particles are large enough to settle to the bottom; "shake well before using."
colloid particles are in between the sizes of a solution and suspension, particles are large enough to scatter light but small enough to not settle; examples are fog, milk, eggs, butter.
solubility ability to dissolve.
Factors Affecting Solutions temperature- increase temp,/increase solubility, pressure- gas, surface area- exposing more particles to the solvent, agitation- stir, shake, mix, types of materials- like dissolves like.
solvent doing the dissolving.
solute being dissolved.
acid sour taste, react with metals and carbonates, corrosive (eats away), turn blue litmus paper red, H+, pH of 0-7.
pH scale 0 end- strong acid, near 7- weak acid, 7- neutral, 14 end- strong base, near 7- weak base.
pH power of Hydrogen
base taste bitter, feel slippery (like soap), turn red litmus paper blue, can be just as dangerous as an acid, OH-, pH of 7-14.
molarity number of moles of a solute in the volume of a solution; moles/volume of solution.
Neutralization reaction between an acid and a base; products- water and salt.
saturated holding the max. amount of solute at a given temperature.
unsaturated can continue to hold more solute.
supersaturated holding more solute that a saturated solute by heating it up.
insolubility not able to dissolve; examples are oil and water (nonpolar and polar.)
Created by: S730503
Popular Physical Science sets

 

 



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