chemistry year 8

Question 1

Measurements and observations about something.

Answer 1

Data

Question 2

Data you collect yourself from an experiment.

Answer 2

Primary Data

Question 3

Data from the internet or other places.

Answer 3

Secondary data

Question 4

Things you do wrong that affect your measurements-can be avoided.

Answer 4

Mistakes

Question 5

Small changes to measurements that can’t be avoided.

Answer 5

Error

Question 6

Educated guess.

Answer 6

Hypothesis

Question 7

What is changed

Answer 7

Independent variable.

Question 8

Being measured

Answer 8

Dependent variable

Question 9

Variable that is kept constant through an experiment.

Answer 9

Controlled variable

Question 10

When only one variable is changed in an experiment.

Answer 10

Fair test

Question 11

Substance that are made up of just one atom.

Answer 11

Element

Question 12

Substance that has metallic shine, conduct heat and electricity.

Answer 12

Metal

Question 13

Able to be hammered or bent into new shapes.

Answer 13

Malleable

Question 14

Easily crumbled or shattered.

Answer 14

Brittle

Question 15

Dull substance that doesn’t conduct heat and electricity, break or crumble.

Answer 15

Non-metal

Question 16

List of elements form lightest to heaviest and it helps scientists understand the properties.

Answer 16

Periodic table

Question 17

Cluster of two or more atoms bonded together.

Answer 17

Molecule

Question 18

Substances made of lattice or identical molecules with two or more types of atoms.

Answer 18

Compound

Question 19

Any combination of two or more elements or compounds.

Answer 19

Mixture

Question 20

A mixture of a metal with other metals or non-metals.

Answer 20

Alloy

Question 21

Can be made into a thin wire

Answer 21

Ductile

Question 22

Same alike

Answer 22

Homogenous