CrossChemACPU4TestReview2024

When water changes to a gas, energy is

• absorbed

• released

• transformed to a different form

• conserved as the phase change occurs

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If the radius of a potassium atom is 2.65 x 10^-1 nm, what is the radius in meters?

• 2.65 x 10 ^-4 m

• 2.65 x 10 ^-19 m

• 2.65 x 10^-10 m

• 2.65 m

Li, Na, K, and Rb all have

• +1 ions

• Similar properties

• 1 valence electron

• All of the above

Tags

NGSS.HS-PS1-1

Which of the following elements has the highest ionization energy?

• F

• Rb

• C

• Na

Tags

NGSS.HS-PS1-1

Atomic radius across a period _______ and down a period ________

• INCREASES, DECREASES

• DECREASES, INCREASES

• DECREASES, DECREASES

• INCREASES, INCREASES

Tags

NGSS.HS-PS1-1

How many electrons does Fe³⁺ have?

• 29

• 26

• 52

• 23

Tags

NGSS.HS-PS1-1

Which of the following is an IMPOSSIBLE electron configuration?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What type of bond forms between the C and N in the molecule HCN?

• Ionic

• Single

• Double

• Triple

In the structure of an atom...

• Electrons and protons are in the nucleus, neutrons are outside

• Neutrons and electrons are in the nucleus, protons are outside

• Electrons are in the nucleus, protons and neutrons are on the outside

• Protons and neutrons are in the nucleus, electrons are outside

Read the graduated cylinder to the correct number of significant figures...

• 2.60 mL

• 2.6 mL

• 2.70 mL

• 2.65 mL