Physical and Chemical Changes Practice

A physical property is a feature of an object that you can observe with your senses and measure with a tool. Which is a physical property that you can measure?

• the color of a ball

• the freezing point of water

• the texture of a sweater

• the smell of something burning

Tags

NGSS.5-PS1-3

Folded paper and frozen water are examples of a substance being altered with no new substance being formed. Which term best defines this process?

• chemical change

• chemical substance

• physical change

• physical substance

Which is a physical reaction?

• lighting a match

• rusting metal

• baking a cake

• making sugar water

Tags

NGSS.MS-PS1-4

The diagram shows a solid piece of chocolate before it melted into liquid form. Which property of the piece of chocolate is the same in the two diagrams?

• texture

• temperature

• shape

• mass

Tags

NGSS.MS-PS1-4

Which is an example of a chemical change?

• ice melting in a glass

• burning a piece of paper

• dissolving sugar in water

• freezing vegetables in a freezer

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

During an activity, Angelina labels two bowls A and B. She adds water in bowl A and a tablespoon of baking soda in bowl B. Then she adds a tablespoon of lemon juice to both bowls. Angelina observes that bubbles are formed in bowl B but not in bowl A. What type of change occurred in bowls A and B?

• bowl A: physical change;

  bowl B: physical change

• bowl A: chemical change;

  bowl B: chemical change

• bowl A: physical change;

  bowl B: chemical change

• bowl A: chemical change;

  bowl B: physical change

Tags

NGSS.MS-PS1-2

A student watches a burning candle and writes down her observations. Which observation represents a chemical change?

• the candle wax melts

• the size of the candle reduces

• the candle wick burns with a flickering flame

• the hot wax flows down the candle and later hardens

Tags

NGSS.MS-PS1-2

As water evaporates, which best explains the change that is occurring?

• a gas changes to a liquid

• a gas changes to a solid

• a liquid changes to a gas

• a liquid changes to a solid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A yellow dye capsule is added to a glass of clear liquid. What will happen in the glass?

• the capsule dissolves but the liquid remains clear

• the capsule dissolves and the liquid changes to a yellow color

• the capsule does not dissolve

• the capsule does not dissolve, but the liquid changes to a yellow color

Tags

NGSS.MS-PS1-2

The table lists the steps needed to make bread. Which action represents a chemical change?

• baking the dough in the oven

• cutting the bread into slices

• massaging the mixture to make dough

• mixing flour, sugar, salt, and yeast

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5