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.

Remove Ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




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

Chemistry St Peters1

Development of the Periodic Table Key Words

QuestionAnswer
atomic weights These are the masses of one atom of an element. Also called relative atomic masses, the early periodic tables were based on atomic weights.
octaves Groups of eight. Newlands 'law of octaves' groups of 8 elements where every eight element had similar properties.
periodic table The table we use to order the elements based on their atomic masses and their properties.
atomic number The number of protons an element has in the nucleus of its atom.
highest occupied energy level/outer shell The furthest orbit or energy level from the nucleus containing electrons.
alkali metals Metals in Group 1 which form alkalis or alkaline solutions when they react with water.
ionic compounds Compounds formed where the atoms involved in the reaction form ions of a - or + charge. Electrons are exchanged by the atoms.
halogens The elements in Group 7. They are all non-metals. They have 7 electrons in their outer orbit and form diatomic molecules. They can react to form covalent or ionic bonds.
molecules 2 or more atoms chemically bonded together.
ionic Ionic bonds create ions (charged atoms). Electrons are exchanged by the atoms in the reaction to give each atom 8 electrons in their highest energy level.
covalent Bonds where atoms share electrons
transition elements Elements found in the periodic table between Groups 2 and 3. They are all metals.
catalyst Something that changes the rate of a reaction without being consumed (used up) in the reaction.
alloy A mixture of metals and other elements (often carbon)
Created by: sallyfizz