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True or False activity

Yes or No

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About this activity

Read the statement and choose Yes or No

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Colombia

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True or False activity
 

True or False activityOnline version

Read the statement and choose Yes or No

by Keila Álvarez
1

Burning gasoline in a car engine is a chemical change.

2

Matter is everything that has mass and occupies space.

3

General properties of matter can differentiate one substance from another.

4

Blood is considered a heterogeneous mixture under a microscope.

5

The oxidation of iron is a physical change because it does not alter its chemical composition.

6

Frying potatoes is a physical change because only the shape and texture change.

7

Condensation of water vapor into liquid water is a physical change.

8

Carbon dioxide (CO₂) is a compound because it contains carbon and oxygen chemically bonded.

9

Plasma is a state of matter found in stars and is characterized by ionized atoms.

10

Gold (Au) is an example of a mixture because it can be found in nature.

11

Cutting a piece of paper into smaller pieces is a chemical change.

12

A chocolate chip cookie is a homogeneous mixture.

13

Centrifugation is a separation method that allows heterogeneous solid-liquid mixtures to be separated using centrifugal force.

14

Burning wood is a chemical change because it produces ash, carbon dioxide, and heat.

15

Iron (Fe) is a compound because it contains atoms bonded together.

16

Oxygen (O₂) is a pure substance because it consists of only one type of element.

17

A physical change does not alter the composition of matter, only its state or shape.

18

Air is a homogeneous mixture because gases are evenly distributed. (

19

Homogeneous mixtures have a uniform composition, and their components cannot be distinguished by sight

20

Melting ice is an example of a chemical change.

21

Reactivity with acids is a physical property of matter.

22

Water is a homogeneous mixture because it is composed of hydrogen and oxygen.

23

Dissolving salt in water is a physical change because no new substance is formed.

24

Progressive sublimation is the change of state from solid directly to gas without passing through the liquid state.

25

Boiling point and melting point are examples of chemical properties.

26

Steel is a homogeneous mixture of iron and carbon.

27

The digestion of food in the human body is a physical change.

28

Breaking a glass is a physical change because no new substance is created.

29

Evaporation is a physical change because the substance remains the same in a different state.

30

Boiling water is a chemical change because the water turns into steam.

31

Distillation is a method of separating mixtures based on differences in solubility.

32

Saltwater is an example of a homogeneous mixture.

33

Wood is a pure substance because it comes from trees.

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