Unit 6 Review

Match the elements with their categories from the periodic table.

• silicon

• halogen in the 3rd period

• chlorine

• noble gas in the 4th period

• krypton

• alkali metal in the 2nd period

• lithium

• metalloid in the second period

• calcium

• alkaline earth metal in 4th period

Tags

NGSS.HS-PS1-1

To which category does each element belong?

Groups:

(a) metals

,

(b) nonmetals

,

(c) metalloids

• iron

• lithium

• oxygen

• arsenic

• boron

• sulfur

• germanium

• strontium

• bromine

• zinc

Tags

NGSS.HS-PS1-1

Order the following elements from SMALLEST to LARGEST atomic radius

• oxygen

• selenium

• tellurium

Tags

NGSS.HS-PS1-1

Order the following from SMALLEST to LARGEST atomic radius

• potassium, K

• bromine, Br

• germanium, Ge

Tags

NGSS.HS-PS1-1

Order the following from SMALLEST to LARGEST ionization energy

• sodium, Na

• potassium, K

• lithium, Li

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Label the following cartoon model of an atom

a

b

c

Proton

Neutron

Electron

Tags

NGSS.MS-PS1-1

Which element has the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d⁴

• chromium, Cr

• titanium, Ti

• sulfur, S

• molybdenum, Mo

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which electron configuration represents a neutral atom of oxygen?

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Determine the average atomic mass of an element with three isotopes. Give your answer with six significant figures.

82.58% 87.9056 amu

7.00% 86.9089 amu

10.42% 85.9093 amu

You won't be able to add the units to your answer but be sure to remember them on the test!

Mathematical Equivalence

OFF

Which element does the mass spectrum shown below most likely correspond to?

• ytterbium, Y

• strontium, Sr

• radium, Ra

• francium, Fr

Tags

NGSS.HS-PS1-8