Measuring and Matter/Energy Review

A chemical change differs from a physical change because in a chemical change a substance

• changes in color
• changes in shape
• changes into another substance
• changes into another state of matter

The chemical formula for water is H₂O.  This information tells you that water is a 

• mixture
• solution
• element
• compound

Matter can change chemically.  Which of the following describes a chemical change?

• jello setting
• clouds forming
• a bomb exploding
• boiling water

A combination of two or more substances that keep their own properties

• solution
• solubility
• mixture
• solute

The density of this material is 2 g/cm³.
There are 24 cm³  Find the total mass.

• 12 grams
• 48 grams
• 12 g/cm³
• 48 g/cm³

What is the volume of the fish?

• 18.0 cm³
• 6.0 cm³ 
• 38.0 cm³

When a solid becomes a liquid

• Sublimation
• Evaporation
• Melting
• Freezing

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Chlorine boils at 239 K.  What is the boiling point of chlorine expressed in degrees Celsius?

• 93 degrees C
• 34 degrees C
• -61 degrees C
• -34 degrees C

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

Tags

CCSS.8.EE.A.4

How many significant figures does the following number have: 100.00210

• 7
• 5
• 10
• 8

Tags

CCSS.8.EE.A.4