Matter, Force & Motion

Which of the following is a chemical reaction?

• Cutting paper

• ice melting

• frying an egg

• water evaporating

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

If you have 50 grams of water and it evaporates, how many grams of water vapor would you have?

• 50 grams

• 0 grams

• 100 grams

• 5 grams

Tags

NGSS.MS-PS1-4

If you start with 100 grams of water and you freeze it, how many grams of ice do you have?

Tags

NGSS.MS-PS1-4

Why do metal bridges need gaps between the metal?

• metal contracts when heated

• metal expands when heated

• metal contracts when cool

• metal expands when cool

Tags

NGSS.MS-PS1-4

Why do people need to wear coats?

• coats are conductors to keep you warm

• coats are conductors to keep the heat out

• coats are insulators to keep your warmth in

• coats are insulators to keep the cold out

What would cause a wagon to slow down?

• gravity

• friction

• inertia

• less mass

Tags

NGSS.MS-PS2-2

How does a parachute work?

• gravity slows you down

• friction from the air slows you down

• inertia makes you fall to earth

• your mass slows you down

Tags

NGSS.MS-PS2-4

Which surface would a toy car roll best on?

• carpet

• grass

• wood floor

• sand paper

Tags

NGSS.MS-PS2-2

Burning wood is an example of what type of change?

• Physical change

• Chemical change

• State change

• Phase change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is a characteristic feature of a chemical change?

• It is easily reversible

• It involves a change in physical state

• It produces new substances with different properties

• It does not involve energy changes

Tags

NGSS.MS-PS1-2