Chem A Unit 3 Test Review- Cross 2024

How many moles of iron are there in 45.32g of iron?

(1 mole of iron = 55.85g)

• 1.232 moles

• .8115 moles

• 55.85 moles

• 2.011 moles

Tags

NGSS.HS-PS1-7

Which of the following atoms is the largest?

• Be

• Ba

• Sr

• Mg

Which of the following has the LOWEST frequency?

• blue

• green

• red

• orange

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-4

As you go across a period, atomic radius ________ and down a group it _______

• increases, decreases

• decreases, increases

• increases, increases

• decreases, decreases

The density of gold is 19.3 g/mL. What is the mass in kilograms of gold that has a volume of 4.57 mL?

• 88.2

• .0882

• 882

• 457

Which element is shown in this orbital diagram?

• Pr

• As

• V

• Sc

Tags

NGSS.HS-PS1-1

The flask contains oxygen, nitrogen, and other gases. The flask contains a _______

• heterogeneous mixture

• compound

• element

• homogeneous mixture

Which of the following elements has the LEAST number of valence (outermost) electrons

• Rb

• Mg

• Ar

• Ga

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons can each orbital (box) hold?

• 3

• 6

• 2

• 10

Which element has the following electron configuration?

[Ar] 4s²3d¹⁰4p²

• Sn

• Pb

• Ge

• Zn

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2