Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
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.
Don't know (0)
Remaining cards (0)
Know (0)
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


chapter 3 test

Everything that surrounds you. matter & energy
What is matter? Anything that has mass and takes up space.
What is energy? Anything that brings about change.
Energy can hold _______ together or break it apart. matter
What makes up matter? atoms
What is at an atoms center? nucleus
Atoms contain ______ & ________ at their center. protons & neutrons
_______ are around the center. Electrons
Protons have a ______ charge. positive
Neutrons have a ______ charge. neutral
Electrons have a _____ charge. negative
Electrons are the part of the atom that are involved in what? chemical reactions
Atoms are mostly _______ space. empty
Elements are made up of _____ kind of atom. one
True/False: Elements can be broken down into simpler form by chemical reaction. False
Elements are arranged in the _________ _______. periodic table
The periodic table provides information about the elements ____, how many ________ it has, and its ______. mas,proteins,symbol
Elements make up __________. everything
Compounds are made up of two or more _________ in exact ___________. elements, proportions.
Compounds have properties ________ from the elements they are made up of. different
What are the two types of compounds? 1. molecular compounds 2. ionic compounds
Molecular compounds for when different types of _____ share their outermost electrons. atoms
What is the smallest part of a molecular compound? molecule
What is a molecule? A group of atoms held together by the energy of chemical bonds.
Ions are __________/__________ charged atoms. positively/negatively
Why do atoms combine? Because they have been positively or negatively charged.
Ions are usually _______. neutral
What happens when an atom loses an electron? The atom has more protons than electrons. It will be negatively charged.
How do ionic compounds form? Ions of opposite charges attract one another to form electrically neutral compounds.
Ions transport _______ for your blood. oxygen
What is a mixture? A combination of substances which individual substances retain their own properties.
Mixtures can be ______, liquids, _____,or any ___________ of them. solids, gases, combination
What are solutions? two or more substances are mixed evenly
Solutions are ________. mixtures
Most chemical reactions take place in mixtures called _________. solutions
Suspensions are ________. mixtures
Suspensions are formed when a liquid or ____ has another ________ evenly spread through it. gas, substance
In a suspension substances do what? sink to the bottom
What do organic compounds always contain? carbon & hydrogen
What are carbohydrates organic molecules that supply energy for cell processes
What are organic molecules?
Created by: lwiese


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

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

If you've accidentally put the card in the wrong box, just tap 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:
restart all cards