Chem 512 1st Semester finals Review

Bubbles and fizzing can be seen instantly when baking soda is mixed with vinegar. The bubbles are evidence of which of the following?

• A gas is formed when baking soda and vinegar are mixed.

• Baking soda dissolves in vinegar when they are mixed.

• Vinegar turns into alcohol when it is mixed with baking soda.

• A precipitate is formed when baking soda and vinegar are mixed.

Tags

NGSS.MS-PS1-2

Baking Cookies

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Melting Ice Cream

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Popping Popcorn

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many significant figures: 216 m

• 1
• 2
• 3
• 0

How many significant figures: 153.0 mL

• 1
• 2
• 3
• 4

How many significant figures: 0.012 km

• 1
• 2
• 3
• 4

Tags

CCSS.8.EE.A.4

How many significant figures: 1000 mL

• 1
• 2
• 3
• 4

Tags

CCSS.8.EE.A.4

The following liquids are poured together in a beaker: alcohol (density=0.79), corn syrup (density=1.38), water (density=1.0), and cooking oil (density=0.93).  Which of these liquids will sink to the bottom of the beaker?

• alcohol
• corn syrup
• water
• cooking oil

A piece of copper has a mass of 89g and a volume of 10 cm3.  What would be the density of the copper?

• 0.89 g/cm3
• 89 g/cm3
• 8.9 g/cm3
• 890 g/cm3

Tags

CCSS.HSG.MG.A.2