Science Unit 2 Review

Which state of matter is shown at the highest temperature?

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Tags

NGSS.MS-PS1-4

Which of the following are examples of a physical change?

• Bubbles forming from mixing baking soda and vinegar

• Fireworks shooting off

• melting chocolate

• baking a cake

• burning leaves

Which four are examples of chemical changes?

• Dissolving salt

• burning leaves

• baking a cake

• fireworks shooting off

• bubbles forming from mixing baking soda and vinegar

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What property is used if a sieve is used to separate a mixture of sand and shells?

• Magnetism

• Solubility (ability to dissolve)

• Size

• Texture

Jayden has a cup of water measuring 198 g. He has a 1/4 cup of salt measuring 23 g. He mixes the water and salt and stirs until all the salt is dissolved. If Jayden then measured the mass of the water after mixing, what would he find?

• The mass will be 23 g.

• The mass will be 175 g.

• The mass will still be 198 g.

• The mass will be 221 g.

Tags

NGSS.MS-PS1-5

Which of the following are physical changes? (Select 2)

• Tearing paper

• Rolling a ball of clay

• Making pancakes

• Burning a match

Which of the following are chemical changes?

• Rust forming on a nail

• Sharpening a pencil

• Freezing water to make ice

• Blowing up a balloon

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is freezing water to make ice a chemical or physical change?

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What property should be used to separate sand from salt?

• Size

• Texture

• Solubility (ability to dissolve)

• Magnetism

Jaxon has a mystery substance. He noticed it flowed and took the shape of the container he poured it in, but the volume did not change. What state of matter is Jaxon observing?

• Plasma

• Gas

• Solid

• Liquid