All Cards

Question 1

What is an atom?

Answer 1

The smallest part of an element that can exist. For example, hydrogen atom.

Question 2

What is a molecule?

Answer 2

Two or more atoms chemically bonded. For example : H2O

Question 3

What is an element?

Answer 3

Only one type of atom present, can be single atoms or molecules.

Question 4

What is a compound?

Answer 4

Two or more different elements chemically bonded.

Question 5

What is the Nuclear atom model?

Answer 5

See book.

Question 6

What is the nucleus

Answer 6

The centre of an atom. Contains neutrons and protons.

Question 7

What is a proton?

Answer 7

Charge of 1+. Mass of 1. Found inside the nucleus.

Question 8

What is a neutron

Answer 8

Charge of 0. Mass of 1. Found inside the nucleus.

Question 9

What is an electron?

Answer 9

Charge of -1. Mass of almost 0. Found orbiting around the nucleus.

Question 10

What is a mixture?

Answer 10

Two or more chemicals, not chemically bonded.

Question 11

What is separation?

Answer 11

Used to separate mixtures. See book for further info.

Question 12

What does soluble/insoluble mean?

Answer 12

Something that can be dissolved or not.

Question 13

Filtration meaning.

Answer 13

Get an insoluble solid from a liquid

Question 14

Crystallisation meaning

Answer 14

Get a soluble solid from a liquid by evaporating liquid off.

Question 15

Distillation meaning.

Answer 15

Get a pure liquid from a mixture of liquids

Question 16

Chromatography meaning

Answer 16

Separate mixtures of coloured compounds

Question 17

What are electron energy levels

Answer 17

See book.

Question 18

what is the Periodic Table

Answer 18

A list of all the elements in order or atomic number. Columns called groups. Rows called periods.

Question 19

What is conservation of mass.

Answer 19

In a chemical reaction, the total mass of reactants = total mass of products

Question 20

Mass number

Answer 20

See book.