Matter and Its Properties: Interactive Quizzes for 8th Grade Science

Question 1

Which of these is NOT a physical property of matter?

Accepted Answer

Acidity

Answer

Melting point

Answer

Density

Answer

Flammability

Question 2

Which property indicates how easily a substance can catch fire?

Accepted Answer

Flammability

Answer

Boiling point

Answer

Density

Answer

Solubility

Question 3

Which of the following characteristics describes a physical property of matter?

Accepted Answer

Can be observed without changing the composition of the substance

Answer

Involves a change in the chemical structure of the substance

Answer

Determines how a substance reacts with other substances

Answer

Can only be observed under a microscope

Question 4

Which term describes a mixture where the components are not evenly distributed and can be easily separated?

Accepted Answer

Heterogeneous mixture

Answer

Solution

Answer

Homogeneous mixture

Answer

Suspension

Question 5

Which of the following is NOT considered a state of matter?

Accepted Answer

Energy

Answer

Solid

Answer

Liquid

Answer

Gas

Question 6

What is the term for the fundamental unit of an element that retains its chemical identity?

Accepted Answer

Atom

Answer

Molecule

Answer

Neutron

Answer

Electron

Question 7

Which type of change involves a transformation in the chemical composition of a substance?

Accepted Answer

Chemical change

Answer

Physical change

Answer

Phase change

Answer

Nuclear change

Question 8

What type of bond is formed when atoms share electrons?

Accepted Answer

Covalent bond

Answer

Ionic bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 9

What is the process called when a gas transforms into a liquid?

Accepted Answer

Condensation

Answer

Freezing

Answer

Evaporation

Answer

Sublimation

Question 10

Which of the following is a characteristic of metals?

Accepted Answer

Good conductors of electricity

Answer

High melting points

Answer

Brittle

Answer

Transparent

Question 11

What is the term for the attractive force between particles of matter?

Accepted Answer

Cohesion

Answer

Adhesion

Answer

Gravity

Answer

Friction

Question 12

Which of the following is the tiniest unit of an element that still retains its chemical properties?

Accepted Answer

Atom

Answer

Molecule

Answer

Ion

Answer

Compound

Question 13

A chemical reaction that releases energy in the form of light is called what?

Accepted Answer

Exothermic

Answer

Combustion

Answer

Endothermic

Answer

Neutralization

Question 14

Which of the following is classified as a physical change?

Accepted Answer

Melting ice

Answer

Burning paper

Answer

Rusting iron

Answer

Digesting food

Question 15

The density of water is 1 gram per milliliter.

Accepted Answer

True

Answer

False

Question 16

The nucleus of an atom contains which of the following particles?

Accepted Answer

Protons and neutrons only

Answer

Protons and electrons only

Answer

Neutrons and electrons only

Answer

Protons, neutrons, and electrons

Question 17

Which material conducts electricity?

Accepted Answer

Metal

Answer

Plastic

Answer

Wood

Answer

Glass

Question 18

Which of the following changes involves breaking or forming chemical bonds, resulting in the formation of new substances?

Accepted Answer

Burning paper

Answer

Melting ice

Answer

Dissolving salt in water

Answer

Freezing water

Question 19

Which of the following mixtures has the same composition throughout?

Accepted Answer

Saltwater

Answer

Salad

Answer

Mud

Answer

Pizza

Question 20

What is the fundamental unit of matter that defines an element's properties and cannot be broken down into smaller particles?

Accepted Answer

Atom

Answer

Molecule

Answer

Ion

Answer

Neutron

Question 21

Which of the following properties describes the capacity of matter to occupy space and has units of grams per cubic centimeter?

Accepted Answer

Density

Answer

Flammability

Answer

Reactivity

Answer

Acidity

Question 22

When a substance transitions directly from a solid to a gas, bypassing the liquid phase, what is this process called?

Accepted Answer

Sublimation

Answer

Condensation

Answer

Deposition

Answer

Evaporation

Question 23

Which of the following factors does NOT influence the speed at which a chemical reaction occurs?

Accepted Answer

Volume of the container

Answer

Temperature

Answer

Concentration

Answer

Surface area

Question 24

When atoms share electrons, what type of chemical bond is formed?

Accepted Answer

Covalent bond

Answer

Ionic bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 25

What is the pH value of a solution that is neither acidic nor basic?

Accepted Answer

7

Answer

0

Answer

14

Answer

28

Question 26

A homogeneous mixture of two or more substances is known as a:

Accepted Answer

Solution

Answer

Compound

Answer

Element

Answer

Heterogeneous mixture

Question 27

The fundamental building block of an element is the:

Accepted Answer

Atom

Answer

Molecule

Answer

Proton

Answer

Electron

Question 28

Which material allows electricity to flow through it easily?

Accepted Answer

Copper

Answer

Plastic

Answer

Wood

Answer

Rubber

Question 29

The transformation of a liquid into a gas is called:

Accepted Answer

Evaporation

Answer

Condensation

Answer

Sublimation

Answer

Deposition

Question 30

Which option is NOT a recognized state of matter?

Accepted Answer

Energy

Answer

Solid

Answer

Liquid

Answer

Plasma

Question 31

Metals are typically characterized by their:

Accepted Answer

Shiny appearance

Answer

High melting point

Answer

Low density

Answer

Effective insulation

Question 32

The center of an atom, containing protons and neutrons, is known as the:

Accepted Answer

Nucleus

Answer

Electron cloud

Answer

Orbital

Answer

Energy level

Question 33

Which quantity measures the amount of matter in an object?

Accepted Answer

Mass

Answer

Volume

Answer

Density

Answer

Length

Question 34

What is the atomic number of an element?

Accepted Answer

Number of protons in the nucleus

Answer

Number of neutrons in the nucleus

Answer

Total number of electrons

Answer

Total number of protons and neutrons

Question 35

What is the process called when a **gas** changes directly into a **solid** without passing through the liquid phase?

Accepted Answer

Sublimation

Answer

Vaporization

Answer

Condensation

Answer

Melting

Question 36

What is the **SI unit** of mass?

Accepted Answer

Kilogram

Answer

Gram

Answer

Pound

Answer

Ounce

Question 37

Which of the following is a **non-metal**?

Accepted Answer

Chlorine

Answer

Sodium

Answer

Iron

Answer

Copper

Question 38

What is the name of the fundamental particle in an atom that has a **negative** charge?

Accepted Answer

Electron

Answer

Proton

Answer

Neutron

Answer

Nucleus

Question 39

Which of the following is the most **reactive** metal?

Accepted Answer

Potassium

Answer

Gold

Answer

Iron

Answer

Sodium

Question 40

What is the pH of a **neutral** solution?

Accepted Answer

7

Answer

0

Answer

14

Answer

10

Question 41

Which of the following is a **conductor** of electricity?

Accepted Answer

Copper

Answer

Plastic

Answer

Wood

Answer

Rubber

Question 42

What is the process by which plants use **sunlight** to convert carbon dioxide and water into glucose?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Combustion

Answer

Decomposition

Question 43

What is sublimation? Give an example of a substance that undergoes this process.

Accepted Answer

Sublimation is the change from a solid directly to a gas, skipping the liquid phase.

Answer

Sublimation is the change from a gas directly to a solid, without becoming a liquid.

Answer

Sublimation is the change from a liquid directly to a solid, without becoming a gas.

Answer

Sublimation is the change from a solid to a liquid, then from a liquid to a gas.

Question 44

Which of these is a physical property of matter that describes how tightly packed the particles are?

Accepted Answer

Density

Answer

Flammability

Answer

Reactivity

Answer

Toxicity

Question 45

What is the name for a mixture where the components are evenly distributed and cannot be separated by physical means?

Accepted Answer

Solution

Answer

Suspension

Answer

Colloid

Answer

Heterogeneous mixture

Question 46

Which of these is NOT a state of matter?

Accepted Answer

Energy

Answer

Solid

Answer

Liquid

Answer

Gas

Question 47

What is the name of the basic building block of matter?

Accepted Answer

Atom

Answer

Molecule

Answer

Ion

Answer

Compound

Question 48

Which chemical element is represented by the letter 'C'?

Accepted Answer

Carbon

Answer

Oxygen

Answer

Nitrogen

Answer

Hydrogen

Question 49

What is the term for a chemical reaction that absorbs heat from its surroundings?

Accepted Answer

Endothermic

Answer

Exothermic

Answer

Neutralization

Answer

Combustion

Question 50

Which of the following substances is a base?

Accepted Answer

Sodium hydroxide

Answer

Hydrochloric acid

Answer

Water

Answer

Vinegar

Question 51

What is the pH of a basic solution?

Accepted Answer

Greater than 7

Answer

Less than 7

Answer

Equal to 7

Answer

Equal to 0