Vocabulary

Question 1

Weight

Answer 1

a body’s relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.

Question 2

Volume

Answer 2

the amount of space that a substance or object occupies, or that is enclosed within a container, especially when great.

Question 3

Solid

Answer 3

a substance or object that is solid rather than liquid or fluid.

Question 4

Liquid

Answer 4

a substance that flows freely but is of constant volume, having a consistency like that of water or oil.

Question 5

Gas

Answer 5

a substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape (unlike a solid) and no fixed volume (unlike a liquid).

Question 6

Molecules

Answer 6

a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

Question 7

Mixture

Answer 7

the product of the random distribution of one substance through another without any chemical reaction, as distinct from a compound.

Question 8

Physical changes

Answer 8

A chemical change, also known as a chemical reaction, is a process where one or more substances are altered into one or more new and different substances.

Question 9

Chemical changes

Answer 9

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances.

Question 10

quantitative data

Answer 10

Quantitative data is data expressing a certain quantity, amount or range

Question 11

qualitative data

Answer 11

Qualitative research is a scientific method of observation to gather non-numerical data.