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>
apps
export
edit
print
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

science

Elements, Atoms, & the Periodic Table

QuestionAnswer
Chemistry- Chemistry- The study of the properties of matter and how matter changes
Atom- Atom- The smallest unit of matter.
Element- Element- A pure substance that cannot be broken down into any other substances by Chemical or physical means (simplest substances)
Compound Compound- A pure substance made of two or more elements chemically combined in a set ratio.
Periodic table- Periodic table- A chart of the elements showing the repeating
Period- Period- The horizontal rows in the periodic table.
Group- Group- The 18 vertical columns in the periodic table.
Valence electron Valence electron- The measurement of the amount of matter in the object.
Energy level- Energy level- The location of electrons.
Atomic mass- The number of neutrons + protons in an atom. Ionic bond- A chemical bond formed between a metal and non-metal.
Density The ratio of the mass of a substance to its volume.
Mass The amount of matter in the object.
Volume- The amount of space that matter occupies. Volume- The amount of space that matter occupies.
What is the formula for density? Density = Mass รท Volume
How many groups are on the periodic table? 18
How many periods are on the periodic table? 7
Who is credited with organizing the first PT? Dmitri Mendeleev
How do you find the number of neutrons in an atom? mass - protons
What does the group # tell you about an element? They tell you how many valence electrons will be on the outer shell.
What does the period # tell you about an element? They tell you how many shells you will have.
Positive ions are called cation. They will lose electrons.
Negative ions are called anion. They will gain electrons.
Created by: hohara23
 

 



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