The graph above is a heating curve of water. Which number in the graph represents the process of freezing?

• 1

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

The graph above is a heating curve of water. Which number in the graph represents the gas state?

• 1

• 2

• 3

• 4

• 5

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

The graph above is a heating curve of water. Which number in the graph represents the process of boiling?

• 1

• 2

• 3

• 4

• 5

Tags

NGSS.HS-PS3-4

Using the graph above, which compound would dissolve the fastest at 20° C, KCl, NaCl, KNO₃, or KClO₃?

• KCl

• NaCl

• KNO₃

• KClO₃

Tags

NGSS.HS-PS1-5

Using the graph above, which compound would dissolve the fastest at 60° C, KCl, NaCl, KNO₃, or KClO₃?

• KCl

• NaCl

• K₂Cr₂O₇

• KClO₃

Tags

NGSS.HS-PS1-5

Using the graph above, solubility of which compound is influenced the most by changes in temperature?

• KCl

• NaCl

• K₂Cr₂O₇

• KClO₃

What is the molarity of a solution when 100 mL water are used to dissolve 21g CuSO₄?

• 0.13 M

• 3.4 M

• 1.6 M

• 0.84 M

A solution that has the maximum amount of solute dissolved in the solvent is called __________________.

• saturated

• supersaturated

• unsaturated

• suspension

A solution that has less than the maximum amount of solute dissolved in the solvent is called __________________.

• saturated

• supersaturated

• unsaturated

• suspension

How many grams of NaCl need to be dissolved in 50mL of water to make a 0.2M solution?

• 1.82g

• 0.13g

• 1.67g

• 0.58g