The base units for the metric system are

• Centimeter, kilograms, liters

• Meters, grams, liters

• Feet, pounds, gallons

• Meters, grams, millimeters

What is the mass of a mystery substance that has a density of 20 g/mL and a volume of 3 mL?

• 6.6 g

• 60 g

• 17 g

• 0.15 g

Compounds are

• Made of two or more elements chemically bonded together

• Made of only one kind of atom

• Pure substances that are composed of one element

• Substances that can be broken down easily

Tags

NGSS.MS-PS1-1

Which of the following is an example of homogeneous mixture?

• Nitrogen (N)

• Pepperoni and sausage pizza

• Water (H20)

• Soap

Which of the following is an example of a heterogeneous mixture?

• Trail mix

• Iron (Fe)

• Kool aid

• Water

Particles move quickest when they are in which state of matter

• Condensed

• A solid

• A liquid

• A gas

Tags

NGSS.MS-PS1-4

What happens to the molecules in a pot of water as it’s heated?

• They move faster

• They move slower

• They lose thermal energy

• They gain potential energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

All phase changes are examples of

• Chemical changes

• Chemical reactions

• Physical changes

• Physical effects

Tags

NGSS.MS-PS1-4

Chemical properties

• Describes a substance’s ability to change into a new substance

• Describes the chemical composition of a substance

• Describes changes in density or phase

• Describe changes in mass or weight

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Magnesium (Mg) is an example of a

• Metal

• Non-metal

• Metalloid

• Transition metal