Grade 7 Science Exam Questions

Grade 7 Science Exam Questions

• Instructions for answering the exam: Answer all questions on the provided answer sheet. Clearly shade your selection. If you make a mistake, rub it out and mark the correct answer.

Question 1

• What is the charge of a neutron?
  • No charge

Question 2

• What is the number of electrons in the first shell of an atom?
  • 2

Question 3

• What is the relationship between the number of protons and electrons in an atom?
  • The number of protons is equal to the number of electrons.

Question 4

• What is the term for the arrangement of electrons in energy levels around the nucleus of an atom?
  • Electron configuration

Question 5

• What is the atomic number of an atom equal to?
  • The number of protons in the nucleus

Question 6

• What is the atomic mass of an atom equal to?
  • The number of protons and neutrons in the nucleus

Question 7

• What is the maximum number of electrons that can occupy the second shell?
  • 8

Question 8

• Calcium has an atomic number of 20. What is the electronic configuration of the element Calcium (Ca)?
  • 2, 8, 8, 2

Question 9

• What do the circles represent in a Dot and Cross diagram?
  • Electrons

Question 10

• Chlorine has an atomic number of 17. What is the electronic configuration of the element Chlorine (CI)?
  • 2, 8, 7

Question 11

• What happens to the particles in a liquid as they are heated?
  • They move faster and escape from the surface of the liquid.

Question 12

• What is an element?
  • A substance made up of only one type of element.

Question 13

• What is the term for the fundamental building block of all materials?
  • Atom

Question 14

• What happens to the particles in a gas as it is cooled?
  • They move slower and come closer together.

Question 15

• What is the term for a pure substance that is made up of two or more different types of atoms chemically combined?
  • Compound

Question 16

• What occurs when the particles in a gas are cooled?
  • They move slower and come together.

Question 17

• What is the fundamental building block of all materials?
  • Atom

Question 18

• What is the term for a pure substance that is made up of two or more different types of atoms chemically combined?
  • Compound

Question 19

• What is matter?
  • Anything that has mass and volume.

Question 20

• What is an atom?
  • A small particle that makes up matter.

Question 21

• Which of the following is an example of an element?
  • Sodium chloride (NaCl)

Question 22

• Which part of an atom has a positive charge?
  • Proton

Question 23

• What is the atomic number of an element?
  • The number of protons in the nucleus of an atom

Question 24

• What does the number of protons in an atom determine?
  • The element's identity

Question 25

• Which of the following particles is found outside the nucleus of an atom?
  • Electron

Question 26

• Which of the following elements is a noble gas?
  • Helium (He)

Question 27

• What is the atomic symbol for Sodium?
  • Na

Question 28

• Which particle is neutral and has no charge?
  • Neutron

Question 29

• What is a molecule?
  • Two or more atoms bonded together

Question 30

• Which of the following is a compound?
  • Water (H₂O)

Question 31

• What is the simplest form of a substance that cannot be broken down chemically?
  • Element

Question 32

• How many atoms are in a molecule of carbon dioxide (CO₂)?
  • Three

Question 33

• Which of the following is true about a compound?
  • It consists of two or more different types of atoms chemically bonded.

Question 34

• Which of the following compounds contains two different elements?
  • NaCl

Question 35

• What is the difference between a molecule and a compound?
  • A molecule can have one type of element, while a compound has two or more.

Question 36

• Which of the following is true about elements in the same group on the periodic table?
  • They have similar chemical properties

Question 37

• Which of the following elements is a metalloid?
  • Boron (B)

Question 38

• Which of the following is an example of a molecule made up of two atoms of the same element?
  • Nitrogen (N₂)

Question 39

• What is a chemical reaction?
  • A process that breaks and forms bonds between atoms.

Question 40

• Which is the main difference between mixtures and compounds?
  • Mixtures are not chemically combined, while compounds are chemically combined.

Question 41

• What is the term for the smallest particle that all matter is made of?
  • Atom

Question 42

• How many electrons can the first shell of an atom hold?
  • 2

Question 43

• What is formed when two or more different types of atoms are bonded together?
  • Molecule

Question 44

• What is the term for the arrangement of atoms in an element?
  • Molecule

Question 45

• What is the purpose of the atomic number of an element?
  • To determine the number of protons in the nucleus.

Question 46

• What is the term for a group of atoms bonded together?
  • Molecule

Question 47

• What is the location of protons and neutrons in an atom?
  • In the nucleus.

Question 48

• What is the maximum electron capacity of the 2nd shell?
  • 8

Question 49

• What is the charge of an electron?
  • Negative

Question 50

• What is the term for a group of atoms bonded together?
  • Molecule

Question 51

• What determines the identity of an element?
  • Number of protons

Question 52

• What is the primary process by which sediments are converted into sedimentary rocks?
  • Compaction and cementation

Question 53

• Which of the following statements best describes the relationship between sedimentary rocks and metamorphic rocks?
  • Sedimentary rocks can undergo heat and pressure to become metamorphic rocks.

Question 54

• Which of the following statements about the formation of sedimentary rocks is not correct?
  • The rock cools slowly underground

Question 55

• Rocks that have been formed from other rocks due to intense heat and pressure are called:
  • Metamorphic rocks

Question 56

• Which of the following is not considered an agent of change in the rock cycle?
  • Time

Question 57

• What role does chemical reaction play in the rock cycle?
  • Chemical reactions are essential in weathering of rocks and the formation of sediments

Question 58

• What happens to metamorphic rocks when subjected to extreme heat?
  • They can melt to form magma

Question 59

• What type of rock is formed by the cooling and solidification of lava?
  • Extrusive igneous rock

Question 60

• What geological process involves breaking down rocks into smaller fragments?
  • Weathering and erosion

Question 61

• Which of the following describes how igneous rocks are formed?
  • From the cooling and solidification of magma or lava

Question 62

• What influences the texture of igneous rocks?
  • The rate of cooling of magma or lava

Question 63

• Sedimentary rocks are typically formed through which process?
  • Accumulation and cementation of sediments

Question 64

• Which statement accurately represents metamorphic rocks?
  • They can originate from any pre-existing rock type

Question 65

• What is a characteristic feature of metamorphic rocks?
  • Foliation texture

Question 66

• What was likely the first type of rock to form in the Earth's crust was most likely:
  • Igneous

Question 67

• What happens to rocks if they are buried deep in the Earth at high temperatures and pressures?
  • They break down into smaller particles

Question 68

• What is the initial stage of a star's life cycle?
  • Protostar

Question 69

• During which stage does a star, like our Sun, spend most of its life?
  • Main sequence star

Question 70

• What happens to a star once it exhausts its hydrogen fuel?
  • It becomes a red giant

Question 71

• What is a characteristic of a white dwarf star?
  • It emits no light

Question 72

• What defines a black hole in terms of gravity?
  • Light cannot escape its gravitational pull

Question 73

• What is the final stage of a massive star's life cycle after the supernova?
  • Black Hole

Question 74

• What happens to the outer layers of a star when it becomes a red giant?
  • They expand massively and become cooler

Question 75

• What is created during a supernova event?
  • New stars only

Question 76

• The variable that you measure is the –
  • Dependent Variable

Question 77

• How many independent variables can be tested in a controlled experiment?
  • One

Question 78

• What is a prediction?
  • An educated guess

Question 79

• An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, same amount of sunlight, and the same amount of liquid. In this investigation, what is the independent variable.
  • Different liquids

Question 80

• Mr. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the dependent variable.
  • Distance traveled by the ball

Question 81

• A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. What is the control variable?
  • The ball used

Question 82

• The measurable factor in an experiment is known as the:
  • Dependent Variable

Question 83

• An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid: water, apple juice, or milk. What should be kept constant?
  • Type of plant, soil, amount of sunlight

Question 84

• In an experiment to determine if temperature affects the solubility of sugar in water, what is the independent variable.
  • The temperature of the water

Question 85

• If you are conducting an experiment to see if the type of fertilizer affects plant growth, what would the dependent variable be?
  • The growth of the plants

Question 86

• What is the primary role of an independent variable in an experiment?
  • It is changed by the researcher to observe an effect.

Question 87

• Which statement accurately describes a dependent variable?
  • It is the outcome measured in response to the independent variable.

Question 88

• What is the significance of control variables in an experiment?
  • They ensure changes to the dependent variable are due to the independent variable.

Question 89

• In a well-designed experiment, how should independent variables be presented?
  • On the x-axis of a graph.

Question 90

• Which statement about relationships between independent and dependent variables is true?
  • The dependent variable is expected to change in response to the independent variable.

Question 91

• Which of the following describes control variables?
  • They are kept constant to prevent them from influencing the dependent variable.

Question 92

• What could happen if control variables are not properly managed in an experiment?
  • Results may be invalid due to extraneous influences.

Test your knowledge with these exam questions on fundamental science topics covered in Grade 7. This quiz covers essential concepts such as atomic structure, electron configurations, and more. Challenge yourself and see how well you understand the building blocks of matter.