P.2.3 EOG Review #5

One type of cold remedy is an effervescent tablet that breaks down in water. When the tablet is placed in water, it forms gas bubbles. In this example, the formation of a gas

• is a physical property.

• occurs when adding water to acid.

• is a sign of a chemical change.

• occurs when the water boils.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is a chemical change?

• frying an egg

• boiling water

• breaking a glass cup

• crushing a piece of bread

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which action causes a chemical change?

• leaves dropping from a tree

• leaves blowing in the wind

• leaves being burned in a fire

• leaves being crushed into pieces

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-4

Which property of sugar remains after sugar is dissolved in water?

• color

• taste

• shape

• texture

Tags

NGSS.MS-PS1-2

Which of these is an example of a new substance being formed?

• a nail rusting

• a wall being painted

• water changing to steam

• paper being folded

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is the best example of a change that can be undone?

• clay put in an oven to harden

• cake batter put in an oven to bake

• chocolate left in a warm car to melt

Brad accidentally left his crayon box in the car on a hot day. Which best explains what happened to his crayons?

• crayons melted; changed from solid to liquid

• crayons melted; changed from liquid to solid

• crayons evaporated; changed from liquid to solid

Tags

NGSS.MS-PS1-4

Which best describes an activity that results in a new material being formed?

• plowing a field

• ironing a shirt

• burning wood

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which best describes why deflating the air from a basketball is an example of a physical change?

• The basketball’s shape is changed.

• The basketball’s color is changed.

• The basketball’s size is changed.

Which example best describes a physical change?

• baking a pie

• burning a candle

• making a paper airplane