Quiz about Year 7 Revision EOYE 2024-2025: THE PERIODIC TABLE

Question 1

Explain common hazard symbols and their meaning.

Accepted Answer

Hazard symbols warn about dangers such as toxicity, flammability, and corrosiveness.

Answer

Hazard symbols are used only for decorative purposes in laboratories.

Answer

Hazard symbols indicate the expiry date of chemicals.

Answer

Hazard symbols are used to show the price of laboratory equipment.

Question 2

Atoms are the building block of all matter.

Accepted Answer

True

Answer

False

Question 3

Matter made up of just one type of atom is called an element.

Accepted Answer

True

Answer

False

Question 4

Different types of atoms are different elements.

Accepted Answer

True

Answer

False

Question 5

Groups are vertical columns and periods are horizontal rows in the periodic table.

Accepted Answer

True

Answer

False

Question 6

Who predicted new elements from observing the properties of elements and arranging them in the Periodic Table?

Accepted Answer

Mendeleev

Answer

Newton

Answer

Dalton

Answer

Rutherford

Question 7

Elements with similar properties are arranged in ______ (columns).

Accepted Answer

groups

Answer

periods

Answer

blocks

Answer

rows

Question 8

There is a gradual change or 'trend' in the properties of the elements across a ______ (row).

Accepted Answer

Period

Answer

Group

Answer

Block

Answer

Family

Question 9

The periodic table is divided into metals and non-metals based on similar properties.

Accepted Answer

True

Answer

False

Question 10

Elements can react with other elements.

Accepted Answer

True

Answer

False

Question 11

Compounds contain two or more different elements that are chemically joined (bonded).

Accepted Answer

True

Answer

False

Question 12

The properties of compounds are usually different from the properties of elements they contain.

Accepted Answer

True

Answer

False

Question 13

Elements combine in fixed ratios to form a ______.

Accepted Answer

compound

Answer

mixture

Answer

element

Answer

solution

Question 14

The formula tells us the type and number of atoms of each element there are in a ______.

Accepted Answer

compound

Answer

mixture

Answer

solution

Answer

atom

Question 15

There are rules for naming compounds that tell us something about the elements they contain.

Accepted Answer

True

Answer

False

Question 16

Complete an experiment, using the terms independent, dependent and control variables. Fill in the blanks: The ______ variable is the one you change, the ______ variable is the one you measure, and the ______ variables are kept the same.

Accepted Answer

independent, dependent, control

Answer

dependent, independent, control

Answer

control, independent, dependent

Answer

dependent, control, independent

Question 17

Use information to explain the results of an experiment. What should you do?

Accepted Answer

Analyze the data, look for patterns, and relate the results to your hypothesis.

Answer

Ignore the data and make up a conclusion.

Answer

Only describe the experiment without discussing the results.

Answer

Change your hypothesis to fit the results.

Question 18

Explain that: Changes can be ________ or ________.

Accepted Answer

physical, chemical

Answer

solid, liquid

Answer

fast, slow

Answer

hot, cold

Answer

big, small

Question 19

Explain that: Physical changes are usually ________, and no new substances are made.

Accepted Answer

reversible

Answer

permanent

Answer

dangerous

Answer

chemical

Question 20

Explain that: Chemical changes are usually ________ and new substances are formed.

Accepted Answer

irreversible

Answer

reversible

Answer

temporary

Answer

physical

Question 21

Explain that: All reactions involve the conservation of ________.

Accepted Answer

mass

Answer

energy

Answer

temperature

Answer

volume

Question 22

Explain that: Bubbles of gas (effervescence), the formation of a precipitate and changes in temperature or colour are evidence of ________ reactions.

Accepted Answer

chemical

Answer

physical

Answer

nuclear

Answer

mechanical

Question 23

Explain that: Exothermic reactions give out heat energy to surroundings (temperature of chemicals ________).

Accepted Answer

increases

Answer

decreases

Answer

remains the same

Answer

becomes zero

Question 24

List the observable properties of solids, liquids, and gases.

Accepted Answer

Solids have fixed shape and volume; Liquids have fixed volume but take shape of container; Gases do not have fixed shape or volume; Liquids and Gases are fluids; Gases are easy to compress, solids and liquids cannot easily be compressed.

Answer

Solids and liquids have no fixed shape; Gases and liquids have fixed volume; Solids are easy to compress, gases are not.

Answer

Solids, liquids, and gases all have fixed shape and volume; None are compressible; Only solids are fluids.

Answer

Solids and gases have fixed shape; Liquids and gases have fixed volume; Only liquids are compressible.

Question 25

Explain the particle model in terms of: Arrangement of particles; Movement of particles.

Accepted Answer

The particle model describes the arrangement and movement of particles in solids, liquids, and gases. In solids, particles are closely packed in a fixed arrangement and vibrate in place. In liquids, particles are close together but can move past each other. In gases, particles are far apart and move freely.

Answer

The particle model states that all particles are stationary and do not move, regardless of the state of matter.

Answer

The particle model describes that particles in solids, liquids, and gases are always far apart and move at the same speed.

Answer

The particle model suggests that particles in solids, liquids, and gases are arranged randomly and do not interact with each other.

Question 26

Name each change of state between solids, liquids, and gases.

Accepted Answer

Melting, freezing, condensation, evaporation, sublimation, deposition.

Answer

Melting, boiling, rusting, dissolving, freezing, burning.

Answer

Condensation, melting, oxidation, filtration, evaporation, combustion.

Answer

Sublimation, deposition, filtration, distillation, freezing, melting.

Question 27

Explain the terms melting point and boiling point, and describe the state of a substance at a particular temperature, given the melting and boiling point.

Accepted Answer

Melting point is the temperature at which a solid turns into a liquid. Boiling point is the temperature at which a liquid turns into a gas. The state of a substance at a particular temperature depends on whether the temperature is below the melting point (solid), between the melting and boiling points (liquid), or above the boiling point (gas).

Answer

Melting point is the temperature at which a liquid turns into a gas. Boiling point is the temperature at which a solid turns into a liquid. The state of a substance at a particular temperature depends on whether the temperature is above the boiling point (solid), between the melting and boiling points (gas), or below the melting point (liquid).

Answer

Melting point is the temperature at which a gas turns into a liquid. Boiling point is the temperature at which a liquid turns into a solid. The state of a substance at a particular temperature depends on whether the temperature is below the boiling point (gas), between the melting and boiling points (solid), or above the melting point (liquid).

Answer

Melting point is the temperature at which a solid turns into a gas. Boiling point is the temperature at which a liquid turns into a solid. The state of a substance at a particular temperature depends on whether the temperature is above the melting point (liquid), between the melting and boiling points (gas), or below the boiling point (solid).

Question 28

Explain the shape of a heating or cooling curve in terms of the movement of particles and the attraction between particles.

Accepted Answer

The shape of a heating or cooling curve shows temperature changes as a substance is heated or cooled. Plateaus on the curve represent phase changes where energy is used to break or form attractions between particles, not to change temperature.

Answer

The shape of a heating or cooling curve shows only the pressure changes as a substance is heated or cooled, and plateaus represent moments when particles stop moving.

Answer

The shape of a heating or cooling curve is determined by the color of the substance and does not relate to particle movement or attraction.

Answer

The shape of a heating or cooling curve shows random temperature spikes due to external factors, not related to particle movement or attractions.

Question 29

Plan and evaluate an experiment investigating how the size of a beaker affects the length of time for which a candle will burn.

Accepted Answer

The size of the beaker affects the availability of oxygen, which changes the burn time of the candle.

Answer

The size of the beaker does not affect the burn time of the candle.

Answer

A larger beaker will always make the candle burn faster.

Answer

A smaller beaker will always make the candle burn longer.

Question 30

Fill in the blank: The products of complete combustion are ______ and ______.

Accepted Answer

water, carbon dioxide

Answer

oxygen, nitrogen

Answer

hydrogen, methane

Answer

carbon monoxide, water

Question 31

Fill in the blank: Incomplete combustion occurs when ______ oxygen is present.

Accepted Answer

insufficient

Answer

excess

Answer

no

Answer

pure

Question 32

Fill in the blank: The products of incomplete combustion are ______ and ______.

Accepted Answer

carbon monoxide, water

Answer

carbon dioxide, water

Answer

carbon dioxide, oxygen

Answer

carbon monoxide, carbon dioxide

Question 33

Problems caused by incomplete combustion include:

Accepted Answer

Production of carbon monoxide

Answer

Increase in oxygen levels

Answer

Decrease in water vapor

Answer

Formation of ozone

Question 34

Which of the following is NOT a term used to describe solutions?

Accepted Answer

C) Mixture

Answer

A) Solute

Answer

B) Solvent

Answer

D) Insoluble

Question 35

Fill in the blank: When dissolved, particles of solute ______ out through the solvent.

Accepted Answer

spread

Answer

sink

Answer

evaporate

Answer

condense

Question 36

Solutions are always transparent.

Accepted Answer

True

Answer

False

Question 37

Fill in the blank: Dissolving is a ______, physical change.

Accepted Answer

reversible

Answer

chemical

Answer

irreversible

Answer

permanent

Question 38

Which two of these elements are likely to be metals? Write the letters.

Accepted Answer

C and E

Answer

A and B

Answer

B and D

Answer

A and D

Question 39

Which element in the table is liquid at room temperature? Write the letter.

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 40

What is the chemical symbol for copper? Tick the correct box.

Accepted Answer

Cu

Answer

Cr

Answer

C

Answer

Co

Answer

Ca

Question 41

The diagram to the left shows the arrangement of atoms in the compound hydrogen fluoride. What is the formula for hydrogen fluoride?

Accepted Answer

HF

Answer

H2F

Answer

HF2

Answer

H2F2

Question 42

In the 19th Century, a scientist called John Dalton used symbols to represent atoms. The symbols he used for atoms of three different elements are shown below. The diagrams below show different combinations of these atoms. (a) (i) Give the letter of the diagram which shows a mixture of two elements.

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 43

In the 19th Century, a scientist called John Dalton used symbols to represent atoms. The symbols he used for atoms of three different elements are shown below. The diagrams below show different combinations of these atoms. (a) (iii) Give the letter of the diagram which shows a mixture of an element and a compound.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 44

Give one difference between a compound and a mixture.

Accepted Answer

A compound has components that are chemically combined, while a mixture has components that are physically combined.

Answer

A compound can be separated by physical means, while a mixture cannot.

Answer

A mixture has a fixed composition, while a compound does not.

Answer

A compound retains the properties of its components, while a mixture does not.

Question 45

The diagrams below show the arrangement of atoms or molecules in five different substances A, B, C, D and E. Each of the circles represents an atom of a different element. Give the letter of the diagram which represents: (i) a mixture of gases;

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 46

The diagrams below show the arrangement of atoms or molecules in five different substances A, B, C, D and E. Each of the circles represents an atom of a different element. Give the letter of the diagram which represents: (ii) a single compound.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 47

How can you tell from the diagram that a chemical reaction took place between substance P and substance Q?

Accepted Answer

A new substance is formed in the diagram.

Answer

The temperature remains constant.

Answer

The diagram shows no change.

Answer

The substances remain unchanged.

Question 48

The diagram below shows a model of a chemical reaction between two substances.

Substance P is carbon.
What could substances Q and R be?

Accepted Answer

Oxygen and carbon dioxide

Answer

Hydrogen and water

Answer

Nitrogen and ammonia

Answer

Sulfur and sulfur dioxide

Question 49

How does the diagram show that mass has been conserved (does not change) in this reaction?

Accepted Answer

The total mass of reactants equals the total mass of products.

Answer

The diagram shows more mass on the product side.

Answer

The mass of reactants is less than the mass of products.

Answer

The diagram does not show any mass values.

Question 50

Arif melted some crystals of stearic acid in a beaker. He placed a temperature probe in the stearic acid and left the stearic acid to cool. As the stearic acid cooled down its state changed. What was the change in the state of the stearic acid as it cooled?

Accepted Answer

From liquid to solid

Answer

From solid to gas

Answer

From gas to liquid

Answer

From solid to liquid

Question 51

Arif plotted the following graph. He forgot to label his axes. What should be the appropriate axis titles and units?

Accepted Answer

Time (seconds) on x-axis, Distance (meters) on y-axis

Answer

Distance (meters) on x-axis, Time (seconds) on y-axis

Answer

Speed (m/s) on x-axis, Time (seconds) on y-axis

Answer

Time (seconds) on x-axis, Speed (m/s) on y-axis

Question 52

Which letter on the graph shows when the stearic acid started to change state?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 53

What in the diagram above shows that air is a gas at room temperature?

Accepted Answer

The air is shown as spreading out to fill the container.

Answer

The air is shown as a solid block.

Answer

The air is shown as a liquid at the bottom of the container.

Answer

The air is shown as particles tightly packed together.

Question 54

How could Ruth make the copper sulphate crystals dissolve more quickly?

Accepted Answer

By stirring the solution or by heating the water.

Answer

By freezing the solution.

Answer

By adding sand to the solution.

Answer

By keeping the solution in the dark.

Question 55

Ruth poured some of the copper sulphate solution into a dish. She left it in a warm room for five days. All the water evaporated from the solution in the dish. What was left in the dish?

Accepted Answer

Copper sulphate crystals

Answer

Water vapour

Answer

Copper metal

Answer

Nothing

Question 56

Which letter on the graph shows when the ice is melting?

Accepted Answer

Q

Answer

R

Answer

S

Answer

T

Question 57

During the experiment, the beaker and its contents were quickly removed from the heat and weighed on a balance at the following times: at 0 minutes, at 5 minutes, at 10 minutes, at 15 minutes. (i) At which two times would you expect the readings on the balance to be the same? ....................... minutes and ....................... minutes

Accepted Answer

0 minutes and 15 minutes

Answer

0 minutes and 5 minutes

Answer

5 minutes and 10 minutes

Answer

10 minutes and 15 minutes

Question 58

Between which two of these times was the mass of the contents of the beaker changing most rapidly? ....................... minutes and ....................... minutes

Accepted Answer

5 minutes and 10 minutes

Answer

0 minutes and 5 minutes

Answer

10 minutes and 15 minutes

Answer

15 minutes and 20 minutes

Question 59

Explain the shape of the graph in terms of the changes in the movement and arrangement of the particles as the substance is heated.

Accepted Answer

The graph shows that as the substance is heated, particles move faster and become more spread out.

Answer

The graph shows that as the substance is heated, particles move slower and become more closely packed.

Answer

The graph shows that as the substance is heated, particles do not change their movement or arrangement.

Answer

The graph shows that as the substance is heated, particles move randomly but remain in the same arrangement.

Question 60

Should the air hole be open or closed when lighting the Bunsen burner?

Accepted Answer

Closed

Answer

Open

Answer

Partially open

Answer

Does not matter

Question 61

The type of flame used during heating is called the roaring flame. Why is this flame suitable for heating?

Accepted Answer

Because it is non-luminous, produces little soot, and the air hole is open.

Answer

Because it is luminous and produces a lot of soot, and the air hole is closed.

Answer

Because it is non-luminous, produces a lot of soot, and the air hole is closed.

Answer

Because it is luminous, produces little soot, and the air hole is open.

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