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.
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

Chem.1st. smstr exam

Periodic Table

Where did chemists assemble to solve the problems of no way to determine number of atoms in a particular compound or no consistent way to find atomic mass? 1st international congress of chemists
presented a method for determining atomic mass Cannizaro
included the new values for atomic mass in a textbook he was writing Mendeleev
discoverer of periodic law Mendeleev
examined the line emission spectra for 38 elements and noticed that elements fit better into patterns when they were arranged according to nucleur charge or the number of protons in the atoms Moseley
his work led to defintion of atomic number Moseley
states that the physical and chemical properties of the elements are periodic functions of their atomic numbers Periodic Law
an arrangement of the elements in order of their atomic number so that elements with similar properties fall in the same column or group modern periodic table
discoverer of Radon Dorn
additions to the new periodic table: noble gases, lanthanides, actinides
added noble gas group to periodic table and discovered the noble gases Ramsay
group of 8 electrons filling the highest energy level of an atom octet
a unique element with properties that do not match any of those on the periodic table hydrogen
group 1 alkali metals
silvery metals that are soft enough to be cut with a knife; very reactive; 1 outer shell electron alkali metals
group 2 alkaline earth metals
harder, denser,stronger than group 1 metals; 2 outer shell electrons alkaline earth metals
d-block elements transition elements
shiny metals; good conductors transition elements
s-block elements together with the p-block elements main group elements
shiny 4f metals silimar in reactivity to alkaline earth metals lanthanides
5f metals that are all radioactive actinide
actinide and lanthanides make up___ inner transition elements
Created by: lovecamille018



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