S11.1 Chemical and Physical Changes Assessment(5th)

Which of the following indicate a chemical reaction is occurring?

• Unknown A dissolves into Unknown B

• Unknown A creates fizzing and bubbles when combined with Unknown B

• Unknown A sinks to the bottom when added to Unknown B

• Unknown A floats to the top when added to Unknown B

Tags

NGSS.MS-PS1-2

Frank found a pile of wood near a campsite, and he believed it had been chemically changed. What property did Frank most likely observe to believe this?

• The surface of the wood felt wet

• The color of the wood was black

• The wood had been chewed

• The wood had been chopped

Tags

NGSS.MS-PS1-2

A change in ​size, ​ shape, and ​ (a)   is a ​ (b)   . A ​ (c)   can NOT be ​ (d)   because it results in a new ​ (e)   being formed.

• state of matter
• physical change
• chemical change
• reversed
• substance

Water freezing into ice is an example of a...

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Iron rusting is an example of a...

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A change in which NEW substances are formed.

• Chemical change
• Physical change
• Casual change
• Formal change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Ripping up paper ...

• Chemical Change
• Physical Change

Organize these options into the right categories

Groups:

(a) Physical Change

,

(b) Chemical Change

• Blow dry your hair

• Cut a loaf of bread

• Two Chemicals mixed together and a gas is produced

• Food Color is dropped into water to give it color

• Change the size of the cardboard to fit in another box

• Baking some breakfast biscuits

• Fireworks show

• Silver spoons have black marks on them

• Mixing salt and pepper

• Toy was left outside and it has rust on it

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Students are investigating chemical changes that occur in different materials . Which TWO investigations would provide evidence of a chemical change?

• Placing a liquid in a freezer until the liquid becomes a solid would provide evidence of a chemical change because the state of matter changes

• Using a hot plate to heat a solid until it changes color and releases an odor would provide evidence of a chemical change because the particles cannot be changed back

• Placing two different liquids together in a beaker and observing that a solid forms when they mix would provide evidence of a chemical change because a new material is formed

• Using a saw to cut a solid into two different pieces would provide evidence of a chemical change because the pieces cannot be put back together

Tags

NGSS.MS-PS1-2

Match the following experiments with the evidence that a chemical change has occurred.

• A temperature change happens.

• Two different liquids are poured into a container and the liquids turn into a solid.

• A gas is produced.

• An antacid tablet in water and bubbles form.

• A color change happens.

• A pink liquid is heated and the substance turns colorless.

• A new substance is produced.

• A room temperature solid and liquid mix and the bowl begins to form ice on the sides.

Tags

NGSS.MS-PS1-2