Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

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.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (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

3 Chemistry Assess


A molecule is chemically combined
An example of a homogeneous mixture is salt water
An example of a heterogeneous mixture is concrete
The “best mixed” of all mixtures is a solutions
The smallest particle of an element that has the properties of that element is a(an) atom
a shorthand way of representing the chemical elements Chemical symbols
The description of a chemical reaction using symbols and formulas is called a chemical equation
A substance that is made up of more than one kind of molecule is called is a (an) mixture
In sweetened tea, the sugar is called the solute
A substance that dissolves in water is said to be soluble
Water in salt water would be the solvent
To increase the solubility of sugar in water you would increase or decrease the temp increase
Electron's Charge Negative
Positively charged particle in the nucleus of an atom is the Proton
Neutron's Charge Neutral
The number of protons in the nucleus of an atom is called the atomic number
The sum of protons and neutrons in the nucleus of an atom is called the atomic mass
The nucleus of an atom contains protons and neutrons
These forces explains that there is a force of attraction between all objects in nature. gravity
These forces explain repulsion and attraction. electromagnetic
These forces are responsible for radioactivity decay. Weak
These force hold proton together. Strong
The number at the top of each square in the periodic table is the (= number of protons) Atomic Number
The horizontal rows of elements in the periodic table are periods
The elements to the left of the stair like dark line on the periodic table Metals
Elements within the same vertical column Family
The elements in a period are arranged in order by # of electron Valences
Elements in the same family of the periodic table have similar properties
The two rows that stand alone at the bottom of the periodic table are rare-earth elements
The periodic table is arranged by all the known elements in order of increasing atomic number
Most of the elements on the periodic table are metals
The noble gases are inactive because their outermost energy level is full
In chemical combinations, non-metals tend to gain electrons
Share the properties of Metals and Non-metals Metalloids
Elements in Group 15 would have how many valences electrons? 5
Moving left to right on the periodic table the elements tend to decrease in activity
Luster Metal
Poor Conductors Non-metal
Ductile / Malleable Metal
Tend to rust or oxidize Metals
Gain Electrons Non-Metals
High Melting Point Metals
Created by: huizenga
Popular Chemistry sets




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:
restart all cards