CHEMICAL AND PHYSICAL CHANGES REVIEW

The change of a liquid to a solid is called….. Freezing Evaporation Melting Condensation

A. FREEZING

What is an example of a chemical property? The density of a substance The ability of a substance to rust The size of a substance The texture of a substance

B. The ability of a substance to rust

A chemical change takes place when…. An ice cube melts Water evaporates An piece of wood is cut An apple rots

D. AN APPLE ROTS!!

How can you change liquid to water vapor? By dissolving salt in the water By mixing the water with punch By heating the water By freezing the water

What happens when you stir lemon mix and water in a glass? The lemon mix and water join to make a different type of matter. The lemon mix floats. The lemon mix disappears and is gone from the glass. The lemon mix dissolves in the water and you cannot see it.

D. THE LEMON MIX DISSOLVES IN THE WATER AND YOU CANNOT SEE IT

Which of these is an example of a chemical change? Dissolving salt in boiling water Mixing sand and rocks Mixing vinegar and baking soda Making lemonade

C. MIXING VINEGAR AND BAKING SODA

What happens when liquid evaporates? It becomes a gas. It becomes a solid. It freezes. It boils.

A. IT BECOMES A GAS

Which is an example of a physical change? Burning Rusting Exploding Dissolving

D. DISSOLVING

When water freezes….. It changes from a solid to liquid. It changes from a solid to a gas. It changes from a liquid to a solid. It changes from a liquid to a gas.

C. IT CHANGES FROM A LIQUID TO A SOLID

What can you do to make cake batter a chemical change? Cool it Freeze it Bake it Stir it

C. BAKE IT

When mixed ingredients freeze to make ice cream ….. A new substance is formed The mass of the liquid forms A physical change takes place A chemical change takes place

C. A PHYSICAL CHANGE TAKES PLACE

Ice melting is an example of …. A chemical change Evaporation A physical change Condensation

C. A PHYSICAL CHANGE

Jaylen causes a chemical change when he takes a piece of wood and… cuts it breaks it carves it burns it

D. BURNS IT

Which is a physical change due to temperature? Dissolving Burning Evaporating Lighting

C. EVAPORATING

Which shows the best evidence that a chemical change is happening? A solid changes shape when it is bent. A material changes temperature after being cooled or heated. Bubbles form when a liquid is being heated. Gas forms when vinegar and baking soda are mixed.

D. GAS forms when vinegar and baking soda are mixed.

Which of these is NOT a way to cause a physical change? Cutting a shirt Tearing wrapping paper Lighting a fireworks Warming coffee

C. LIGHTING FIREWORKS

Which is a clue that a chemical change is taking place? Lemonade is sweet when you add sugar. A pot of water forms bubbles when it reaches a high temperature. Wood changes shape when you sand it. The temperature of a beaker changes when you mix vinegar with baking soda in it.

D. The temperature of a beaker changes when you mix vinegar with baking soda in it.

A physical change has taken place A physical change has been reversed When a piece of wood burns, it combines with oxygen in the air. Carbon dioxide (a gas) forms. What does the development of the gas show? A physical change has taken place A physical change has been reversed A chemical change has taken place A chemical change has been reversed

C. A CHEMICAL CHANGE HAS TAKEN PLACE

THE CHANGE FROM A SOLID TO A LIQUID Chemical change Melting Mixture Chemical property

B.MELTING

The boiling point of water is…

A. 212° F

A change in which one or more new types of matter form is…… Dissolve Chemical change Solution Evaporation

B. CHEMICAL CHANGE

Evaporation Condensation Chemical property Mixture The ability of a substance to react with other substances in its on way, such as baking, burning, or rusting. Evaporation Condensation Chemical property Mixture

C. CHEMICAL PROPERTY

The change from a gas to a liquid is….. Condensation Evaporation Solution Freezing

A. CONDENSATION

The freezing point of water is…

A. 32° F

A combination of two or more substances in which each substance keeps its own properties is……. Evaporation Mixture Melting Condensation

B.MIXTURE

A change in which no new substance is formed is called……… Chemical change Physical change Temperature Chemical property

B. PHYSICAL CHANGE

Solution Mixture Evaporation Condensation The change from a liquid to a gas at the surface of a liquid is called……. Solution Mixture Evaporation Condensation

C. EVAPORATION

To mix evenly into another substance is to____________. Freeze Dissolve Burn Melt

B. DISSOLVE

CHEMICAL OR PHYSICAL CHANGE?

MAKING TRAIL MIX

PHYSICAL CHANGE

SILVER JEWELRY TARNISHING

CHEMICAL CHANGE

RUSTING

CHEMICAL CHANGE

CUTTING GRASS

PHYSICAL CHANGE

SHREDDING PAPER

PHYSICAL CHANGE

BAKING BREAD

CHEMICAL CHANGE

MIXING INGREDIENTS FOR CAKE

PHYSICAL CHANGE

BAKING CUPCAKES

CHEMICAL CHANGE

FRYING AN EGG

CHEMICAL CHANGE

MAKING LEMONADE

PHYSICAL CHANGE

ROTTEN BANANA

CHEMICAL CHANGE

FRUIT SALAD

PHYSICAL CHANGE

BREAKING A PENCIL

PHYSICAL CHANGE