P.1.3

The BEST way to separate salt from water is with the use of

• oil

• Heat

• Magnet

Which of these BEST describes a change that is physical?

• yarn knitting a sweater

• Engine starting

• wood burning

A student placed a small chip of limestone into a hydrochloric acid solution, and carbon dioxide gas was released. The carbon dioxide provided evidence that

• Physical Change

• Chemical Change

• Loss of Mass

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Students performed an investigation on how aluminum cans taken to a recycle center were able to be reused. They found out an aluminum can undergoes which type of change?

• Physical because they are heated

• Chemical a new metal formed

• Physical it remained the same

Tags

NGSS.MS-PS1-2

A chemist observed bubbling and fizzing after adding an acid solution to a white powdery substance in a beaker. Which of the following can be inferred?

• The acid boiled when poured into the beaker.

• The acid and powder formed a new product.

• A physical reaction produced a gas mixture.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which describes only a physical change?

• baking a cake

• frying an egg

• squeezing lemon juice

Which describes only a physical change?

• baking a cake

• frying and egg

• melting butter

A flat piece of paper has a mass of 5 grams. When the paper is crumpled into a ball, the mass of the crumpled paper is

• much more than the flat

• slightly more than the flat

• the same as the flat

Tags

NGSS.MS-PS1-5

Which of these does NOT illustrate substances reacting to form new substances?

• H2O --> H2O

• H2 + O2 --> 2H2O

• Na+Cl2 --> NaCl

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When iron combines with oxygen in a moist environment, rust forms because of a

• Chemical Reaction

• Physical Reaction

• Change in density

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5