Chem A U2 Test Review-CROSS

Which subatomic particle has a negative charge?

• Proton

• Electron

• Neutron

• Nucleus

Measure the length of the ruler in the diagram.

• 2.0 cm

• 2.5 cm

• 2.50cm

• 3.00cm

Which of following numbers has two significant figures?

• 0.002

• 20.0

• 2.0 x 10³

• 0.2

How many inches are in 3.54 ft? (1 ft= 12 inches)

• 4.29

• 42.48

• 42.5

• 3.39

How would you classify salt, NaCl

• pure substance-compound

• pure substance-element

• mixture-heterogeneous

• mixture-homogeneous

Gold foil can be melted and formed into gold blocks. This is an example of ______.

• Chemical change

• Physical change

• Separation

• None of the above

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which state of matter has the slowest moving particles?

• Gas

• Liquid

• Solid

• All of the above

Tags

NGSS.MS-PS3-4

Which number has the most significant zeros?

• 4.500000

• 2.719 x 10^-6

• 4300000002

• 0.0340002

Which of the following two pairs are isotopes?

• Mg-24 and C-12

• C-12 and C-13

• Ar-40 and Ca-40

• Cl-35 and Br-80

Tags

NGSS.HS-PS1-8

What is the volume in LITERS (L) of a 52.6 g piece of metal with a density of 19.3g/mL? (1 L=1000mL)

• 2.73 L

• 0.367 L

• 0.00273 L

• 0.00367 L