Definitions

Question 1

solution

Answer 1

a mixture in which another substance is dissolved in another

Question 2

Molecule

Answer 2

Cluster of atoms

Question 3

Atoms

Answer 3

Smallest building blocks of matter

Question 4

Brittle

Answer 4

Can easily be crumpled or shattered

Question 5

Compounds

Answer 5

Molecules with 2 or more types of atoms eg- H2O

Question 6

Lattice

Answer 6

Grid like structures of atoms

Question 7

Malleable

Answer 7

Able to be hammered or bent into a new shape

Question 8

Mixture

Answer 8

Any combination of 2 or more elements or compounds

Question 9

Ductile

Answer 9

Able to be stretched to form a thin wire

Question 10

Chemical change

Answer 10

A change that results in a new substance being formed

Question 11

Chemical reaction

Answer 11

The process of rearranging atoms in substances that determine how they react chemically with other substances

Question 12

Contraction

Answer 12

Decrease in size (when molecules cool down)

Question 13

Expansion

Answer 13

An increase in size (when molecules heat up)

Question 14

Physical change

Answer 14

A change that does not result in a new substance being produced

Question 15

Products

Answer 15

The substances found in chemical reactions

Question 16

Reactants

Answer 16

The starting substances in chemical reactions

Question 17

Word equations

Answer 17

When chemicals are represented by their names