Matter and Its Interactions: Interactive Learning Quizzes for Seventh Grade Science

Question 1

Which of these actions results in a chemical change?

Accepted Answer

Burning wood

Answer

Melting ice

Answer

Dissolving sugar in water

Answer

Boiling water

Question 2

Which of these explains the difference between exothermic and endothermic reactions?

Accepted Answer

Exothermic reactions release energy, while endothermic reactions absorb energy.

Answer

Endothermic reactions release energy, while exothermic reactions absorb energy.

Answer

Both exothermic and endothermic reactions release energy.

Answer

Both exothermic and endothermic reactions absorb energy.

Question 3

Who is credited with discovering the electron and measuring its charge-to-mass ratio?

Accepted Answer

J.J. Thomson

Answer

Ernest Rutherford

Answer

Niels Bohr

Question 4

Based on the phase diagram provided, what is the physical state of water at 25°C and 1 atmosphere?

Accepted Answer

Liquid

Answer

Solid (frozen)

Answer

Gas (boiling)

Answer

Sublimating (solid directly to gas)

Question 5

In the chemical reaction 2H2 + O2 → 2H2O, is energy released or absorbed? Support your answer using bond energy values.

Accepted Answer

Released: The total bond energy of the products is higher than that of the reactants.

Answer

Absorbed: The total bond energy of the products is lower than that of the reactants.

Answer

Cannot be determined using bond energy values alone.

Question 6

You have an open jar with some water in it. You place the jar on your desk. What will happen to the water level in the jar over time?

Accepted Answer

The water level will decrease due to evaporation.

Answer

The water level will stay the same.

Answer

The water level will increase due to condensation.

Answer

The water will freeze.

Question 7

Which property is NOT characteristic of acids?

Accepted Answer

Turn red litmus paper blue

Answer

Sour taste

Answer

React with metals to produce hydrogen gas

Answer

Conduct electricity when dissolved in water

Question 8

How does a catalyst impact a chemical reaction's activation energy and rate?

Accepted Answer

Decreases activation energy, increases reaction rate

Answer

Increases activation energy, decreases reaction rate

Answer

No effect on activation energy or reaction rate

Answer

Increases activation energy, increases reaction rate

Question 9

Which of the following is NOT a state of matter?

Accepted Answer

Energy

Answer

Solid

Answer

Liquid

Answer

Gas

Question 10

What is the process called when a solid turns directly into a gas?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Condensation

Answer

Deposition

Question 11

What type of reaction occurs when two or more substances combine to form a single product?

Accepted Answer

Combination

Answer

Decomposition

Answer

Single-replacement

Answer

Double-replacement

Question 12

What is the law of conservation of mass?

Accepted Answer

Mass is conserved in a chemical reaction.

Answer

Mass can be created or destroyed in a chemical reaction.

Answer

Mass is lost in a chemical reaction.

Answer

Mass is gained in a chemical reaction.

Question 13

What is the SI unit of temperature?

Accepted Answer

Kelvin

Answer

Degree Celsius

Answer

Degree Fahrenheit

Answer

Rankine

Question 14

Which of the following is a conductor of electricity?

Accepted Answer

Copper

Answer

Rubber

Answer

Wood

Answer

Glass

Question 15

What is the process called when a gas dissolves in a liquid?

Accepted Answer

Dissolution

Answer

Evaporation

Answer

Condensation

Answer

Freezing

Question 16

Which of these is a phase change that involves a substance changing from a liquid to a gas?

Accepted Answer

Evaporation

Answer

Freezing

Answer

Condensation

Answer

Sublimation

Question 17

When does sublimation occur?

Accepted Answer

A solid turns directly into a gas

Answer

A solid turns directly into a liquid

Answer

A liquid turns directly into a gas

Answer

A gas turns directly into a solid

Question 18

Which property describes the ability of a substance to catch fire easily?

Accepted Answer

Flammability

Answer

Density

Answer

Solubility

Answer

Melting point

Question 19

What type of bond forms when atoms share electrons?

Accepted Answer

Covalent bond

Answer

Ionic bond

Answer

Metallic bond

Answer

Hydrogen bond

Question 20

Which chemical equation is balanced?

Accepted Answer

2H2 + O2 -> H2O

Answer

H + O2 -> H2O

Answer

H2O -> H + O

Answer

2H2O -> 2H + O2

Question 21

What does a catalyst do in a chemical reaction?

Accepted Answer

Speeds up the reaction without being consumed

Answer

Slows down the reaction

Answer

Is consumed by the reaction

Answer

Has no effect on the reaction

Question 22

Which energy source is classified as renewable?

Accepted Answer

Wind

Answer

Coal

Answer

Natural gas

Answer

Petroleum

Question 23

What does the law of conservation of energy state?

Accepted Answer

Energy cannot be created or destroyed but can be transformed

Answer

Energy can be created but not destroyed

Answer

Energy can be destroyed but not created

Answer

Energy can be both created and destroyed

Question 24

What is the force that holds atoms together called?

Accepted Answer

Strong nuclear force

Answer

Gravitational force

Answer

Electromagnetic force

Answer

Weak nuclear force

Question 25

Which of these is a conductor of electricity?

Accepted Answer

Copper

Answer

Plastic

Answer

Rubber

Answer

Wood

Question 26

What is the process called when a solid turns directly into a gas?

Accepted Answer

Sublimation

Answer

Melting

Answer

Freezing

Answer

Vaporization

Question 27

What is the law that states that the total mass of the reactants in a chemical reaction is equal to the total mass of the products called?

Accepted Answer

Law of Conservation of Mass

Answer

Law of Definite Proportions

Answer

Law of Multiple Proportions

Answer

Law of Combining Volumes

Question 28

Which of these is a renewable resource?

Accepted Answer

Solar energy

Answer

Coal

Answer

Natural gas

Answer

Petroleum

Question 29

What is the process by which plants use sunlight to produce food called?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Combustion

Answer

Fermentation

Question 30

Which of these is a biodegradable material?

Accepted Answer

Paper

Answer

Plastic

Answer

Glass

Answer

Metal

Question 31

Which state of matter is the most dense?

Accepted Answer

Solid

Answer

Liquid

Answer

Gas

Answer

Plasma

Question 32

What is the name of the process by which a solid changes directly into a gas?

Accepted Answer

Sublimation

Answer

Evaporation

Answer

Condensation

Answer

Melting

Question 33

Which of the following changes is a chemical change?

Accepted Answer

Burning wood

Answer

Melting ice

Answer

Dissolving salt in water

Answer

Freezing water

Question 34

Which type of chemical reaction releases energy?

Accepted Answer

Exothermic

Answer

Endothermic

Answer

Neutralization

Answer

Redox

Question 35

What does a catalyst do in a chemical reaction?

Accepted Answer

Lowers the activation energy

Answer

Increases the activation energy

Answer

Changes the products of the reaction

Answer

Stops the reaction from happening

Question 36

Which of these is a mixture?

Accepted Answer

Salt water

Answer

Pure gold

Answer

Carbon dioxide

Answer

Water vapor

Question 37

What is the difference between a homogeneous and a heterogeneous mixture?

Accepted Answer

Homogeneous mixtures are uniform while heterogeneous mixtures are not.

Answer

Heterogeneous mixtures are uniform while homogeneous mixtures are not.

Answer

Homogeneous mixtures have only one type of atom, while heterogeneous mixtures have two or more.

Answer

Heterogeneous mixtures have only one type of atom, while homogeneous mixtures have two or more.

Question 38

Which of the following is an example of a colloid?

Accepted Answer

Milk

Answer

Salt water

Answer

Air

Answer

Pure water

Question 39

Which experiment demonstrates the constant movement and collisions of gas particles?

Accepted Answer

Releasing a drop of perfume in one corner of a room and observing the spread of the scent

Answer

Filtering a gas through a filter paper

Answer

Heating a gas and observing the change in its volume

Answer

Dissolving a solid in a liquid

Question 40

When a chemical reaction is in equilibrium, what is happening?

Accepted Answer

The forward and reverse reactions happen at the same speed, so the amounts of reactants and products stay the same.

Answer

All of the reactants have changed into products.

Answer

No chemical reactions are happening.

Question 41

What is a key characteristic of a scientific hypothesis?

Accepted Answer

It is a specific and testable explanation.

Answer

It is a fact that has been proven to be true.

Answer

It is an idea that is widely accepted by scientists.

Question 42

In the balanced chemical equation 2Al + 3Cl2 → 2AlCl3, which reactant is present in the limiting amount?

Accepted Answer

Al

Answer

Cl2

Answer

Both Al and Cl2

Answer

Neither Al nor Cl2

Question 43

Which factor does NOT influence the solubility of a gas in a liquid?

Accepted Answer

Volume

Answer

Temperature

Answer

Pressure

Answer

Intermolecular forces

Question 44

Which force determines the temperature at which a substance boils?

Accepted Answer

Intermolecular force

Answer

Gravitational force

Answer

Magnetic force

Answer

Nuclear force

Question 45

In ethane (C2H6), the carbon atoms are sp3 hybridized. How does this hybridization impact the shape and properties of the ethane molecule?

Accepted Answer

Tetrahedral shape and nonpolar character

Answer

Linear shape and nonpolar character

Answer

Trigonal planar shape and polar character

Question 46

Which of the following accurately describes nuclear magnetic resonance (NMR) spectroscopy?

Accepted Answer

NMR reveals information about a substance's molecular structure.

Accepted Answer

NMR spectroscopy can provide insights into the dynamics of molecules in solution.

Answer

NMR is limited to studying organic molecules.

Answer

The strength of the magnetic field in NMR spectroscopy does not impact the resulting spectra.

Question 47

What is the definition of entropy?

Accepted Answer

A measure of the disorder or randomness in a system

Answer

The amount of energy in a system

Answer

The tendency of a system to change over time

Question 48

How does temperature influence the physical form of matter?

Accepted Answer

Changes in temperature can cause a substance to transition between states of matter.

Answer

Temperature has no impact on the state of matter.

Answer

Higher temperatures always result in a more solid state of matter.

Question 49

Which of these is a physical change, not a chemical change?

Accepted Answer

Melting

Answer

Combustion

Answer

Rusting

Question 50

Who was the first scientist to propose that matter is made up of tiny, indivisible particles called atoms?

Accepted Answer

Democritus

Answer

Dalton

Answer

Thomson

Answer

Rutherford

Question 51

Which of the following is NOT a function of cell membranes?

Accepted Answer

Storing the cell's DNA

Answer

Regulating the movement of materials into and out of the cell

Answer

Allowing cells to communicate with each other

Answer

Providing support and shape to the cell

Question 52

Which substance has the strongest intermolecular forces, resulting in the highest boiling point?

Accepted Answer

Water (H2O)

Answer

Methane (CH4)

Answer

Carbon dioxide (CO2)

Answer

Nitrogen (N2)

Question 53

Which compound forms a polar covalent bond? Polarity is determined by the difference in electronegativity between the bonded atoms.

Accepted Answer

HCl

Answer

CO2

Answer

LiF

Answer

CH4

Question 54

What happens at the equilibrium position of a chemical reaction, and how can we change where that position lies?

Accepted Answer

At equilibrium, the forward and reverse reactions happen at the same speed.

Answer

Equilibrium means the forward reaction makes more products than the reverse reaction.

Answer

Equilibrium means the reverse reaction makes more products than the forward reaction.

Answer

Equilibrium means the reaction has completely stopped.

Question 55

Which of the following is NOT a type of catalyst used in chemical reactions?

Accepted Answer

Inhibitor

Answer

Homogeneous

Answer

Heterogeneous

Answer

Biological

Question 56

Which observations demonstrate the particulate nature of matter?

Accepted Answer

Brownian motion and the Tyndall effect

Answer

Electrolysis and chemical reactions

Answer

The law of conservation of mass and the law of definite proportions

Answer

The states of matter and their properties

Question 57

When using genetic engineering techniques like gene therapy and genetic screening, what ethical factors are important to consider?

Accepted Answer

Weigh the possible benefits and risks, including how it might affect future generations.

Answer

Only think about the possible benefits.

Answer

Only think about the possible risks.

Answer

Ethical factors don't matter when using genetic engineering techniques.

Question 58

Which of these is an example of a chemical change?

Accepted Answer

Iron rusting

Answer

Water freezing

Answer

Paper tearing

Answer

Sugar dissolving in water

Question 59

Why do solids have a definite shape and volume, while gases do not?

Accepted Answer

Solids have strong forces between particles, while gases have weak forces.

Answer

Solids have a higher density than gases.

Answer

Solids have a higher temperature than gases.

Answer

Solids have a different chemical composition than gases.

Question 60

How does a catalyst impact the activation energy needed for a chemical reaction to occur?

Accepted Answer

It lowers the activation energy.

Answer

It raises the activation energy.

Answer

It has no effect on the activation energy.

Question 61

Which of the following changes is a chemical change?

Accepted Answer

Burning wood

Answer

Melting ice

Answer

Freezing water

Answer

Dissolving sugar in water

Question 62

Which of the following states of matter has a definite shape and volume?

Accepted Answer

Solid

Answer

Liquid

Answer

Gas

Answer

Plasma

Question 63

Which of the following is a compound?

Accepted Answer

Sodium chloride

Answer

Hydrogen

Answer

Oxygen

Answer

Gold

Question 64

What is the process called when a gas changes directly to a solid?

Accepted Answer

Deposition

Answer

Condensation

Answer

Evaporation

Answer

Sublimation