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

Unit 1 Vocab

Words and definitions from 7.SCI Unit 1 (mixtures and experimental design)

TermDefinition
Observation Something you notice using your five senses (sight, hearing, smell, taste, touch)
Inference Something you know based on observations and prior knowledge
Testable question A question that is factual, quantifiable (has numbers), can be answered with a scientific experiment.
Quantifiable Something that can be measured or counted. Has numbers
Hypothesis An educated guess based on prior knowledge that can be tested by experiment or observation
Independent Variable Variable that the scientist changes or manipulates
Dependent variable Variable that is measured for the results of the experiment
Control group A normal group under standard conditions that does not receive the independent variable. Used for comparison
Experimental group Groups that receive the independent variable
Constants Things that need to be kept the same in an experiment.
Conclusion A summary of what you learned from an experiment
Mixture A combination of different substances that can be separated by physical means
Pure substance Substance with only one kind of molecule (ex: gold, water)
Solubility The ability of one substance to dissolve (disappear) in another substance (usually water)
Dissolve When something hides or disappears in water
Magnetism A magnetic (attractive) force that picks up metals like iron, cobalt, and nickel
Density Amount of mass per unit of volume. Can be used to separate mixtures because if something is less dense it will float and if something is more dense it will sink.
Evaporation The process by which molecules of a liquid (like water) absorb energy and become a gas
Data table Place where the results of an experiment are kept Collects and organizes information
Solubility graph Shows the solubility of different substances at different temperatures
Invalidate To make our data unusable To mess up our experiment
Central idea What the text is mainly about
Created by: dellabiology
 

 



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