Science Words

Question 1

What is the definition of ‘atom’?

Answer 1

An atom is the basic unit of a chemical element.

Question 2

True or False: A molecule is made up of two or more atoms bonded together.

Answer 2

True

Question 3

Fill in the blank: The ______ is the center of an atom, containing protons and neutrons.

Answer 3

nucleus

Question 4

What is the term for the smallest particle of a substance that retains its chemical properties?

Answer 4

molecule

Question 5

What is the definition of ‘photosynthesis’?

Answer 5

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Question 6

Which particle has a positive charge?

Answer 6

proton

Question 7

True or False: Electrons are found in the nucleus of an atom.

Answer 7

False

Question 8

What is the term for the change of state from liquid to gas?

Answer 8

evaporation

Question 9

Fill in the blank: ______ is the force that attracts two bodies toward each other.

Answer 9

gravity

Question 10

What is the definition of ‘element’?

Answer 10

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Question 11

Which gas do plants absorb during photosynthesis?

Answer 11

carbon dioxide

Question 12

What is the definition of ‘chemical reaction’?

Answer 12

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Question 13

True or False: The atomic number of an element is determined by the number of protons in its nucleus.

Answer 13

True

Question 14

What do you call the negatively charged particle in an atom?

Answer 14

electron

Question 15

Fill in the blank: The ______ is the measure of the amount of matter in an object.

Answer 15

mass

Question 16

What is the term for the amount of space an object occupies?

Answer 16

volume

Question 17

What is the definition of ‘compound’?

Answer 17

A compound is a substance formed when two or more chemical elements are chemically bonded together.

Question 18

True or False: The pH scale measures how acidic or basic a solution is.

Answer 18

True

Question 19

What is the definition of ‘force’?

Answer 19

A force is any interaction that, when unopposed, will change the motion of an object.

Question 20

Fill in the blank: ______ is the process of a substance transitioning from a solid to a liquid.

Answer 20

melting

Question 21

What is the term for the energy stored in an object due to its position?

Answer 21

potential energy

Question 22

What is the definition of ‘kinetic energy’?

Answer 22

Kinetic energy is the energy that an object possesses due to its motion.

Question 23

True or False: An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons.

Answer 23

True

Question 24

What do you call the process by which living organisms produce energy from food?

Answer 24

cellular respiration

Question 25

Fill in the blank: The ______ is the basic structural and functional unit of all living organisms.

Answer 25

cell

Question 26

What is the definition of ‘gene’?

Answer 26

A gene is a unit of heredity that is transferred from a parent to offspring and determines some characteristic of the offspring.