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CHEMICAL AND PHYSICAL CHANGES REVIEW

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Presentation on theme: "CHEMICAL AND PHYSICAL CHANGES REVIEW"— Presentation transcript:

1 CHEMICAL AND PHYSICAL CHANGES REVIEW

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

3 A. FREEZING

4 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

5 B. The ability of a substance to rust

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

7 D. AN APPLE ROTS!!

8 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

9 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.

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

11 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

12 C. MIXING VINEGAR AND BAKING SODA

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

14 A. IT BECOMES A GAS

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

16 D. DISSOLVING

17 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.

18 C. IT CHANGES FROM A LIQUID TO A SOLID

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

20 C. BAKE IT

21 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

22 C. A PHYSICAL CHANGE TAKES PLACE

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

24 C. A PHYSICAL CHANGE

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

26 D. BURNS IT

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

28 C. EVAPORATING

29 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.

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

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

32 C. LIGHTING FIREWORKS

33 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.

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

35 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

36 C. A CHEMICAL CHANGE HAS TAKEN PLACE

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

38 B.MELTING

39 The boiling point of water is…

40 A. 212° F

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

42 B. CHEMICAL CHANGE

43 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

44 C. CHEMICAL PROPERTY

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

46 A. CONDENSATION

47 The freezing point of water is…

48 A. 32° F

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

50 B.MIXTURE

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

52 B. PHYSICAL CHANGE

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

54 C. EVAPORATION

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

56 B. DISSOLVE

57 CHEMICAL OR PHYSICAL CHANGE?

58 MAKING TRAIL MIX

59 PHYSICAL CHANGE

60 SILVER JEWELRY TARNISHING

61 CHEMICAL CHANGE

62 RUSTING

63 CHEMICAL CHANGE

64 CUTTING GRASS

65 PHYSICAL CHANGE

66 SHREDDING PAPER

67 PHYSICAL CHANGE

68 BAKING BREAD

69 CHEMICAL CHANGE

70 MIXING INGREDIENTS FOR CAKE

71 PHYSICAL CHANGE

72 BAKING CUPCAKES

73 CHEMICAL CHANGE

74 FRYING AN EGG

75 CHEMICAL CHANGE

76 MAKING LEMONADE

77 PHYSICAL CHANGE

78 ROTTEN BANANA

79 CHEMICAL CHANGE

80 FRUIT SALAD

81 PHYSICAL CHANGE

82 BREAKING A PENCIL

83 PHYSICAL CHANGE


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