Term 1

Question 1

What is a molecule?

Answer 1

A particle with two or more atoms joined together.

Question 2

What is a compound?

Answer 2

Two or more elements chemically bonded and have fixed proportions.

Question 3

If a substance ends in ‘ide’ it is a…

Answer 3

Compound

Question 4

If a substance ends in ‘ate’, it means…

Answer 4

There are more than one non-metal elements and the last one is oxygen.

Question 5

What is a mixture?

Answer 5

Two or more elements that are not chemically bonded and are not in fixed proportion.

Question 6

What is an atom?

Answer 6

The smallest part of an element that can exist.

Question 7

What is element?

Answer 7

A substance made from only one type of atom.

Question 8

Elements can be…

Answer 8

single atoms, molecules or giant structures.

Question 9

What is in an atoms nucleus?

Answer 9

Protons and neutrons

Question 10

What is the nucleus surrounded/orbited by?

Answer 10

Electrons

Question 11

What do electrons float in?

Answer 11

Energy levels/shells

Question 12

What do protons and electrons have in common in atoms?

Answer 12

There is always the same number of protons as electrons.

Question 13

What is the protons relative mass and relative charge?

Answer 13

RM- 1

RC- +1

Question 14

What is the electrons relative mass and relative charge?

Answer 14

RM- 1/1836

RC- -1

Question 15

What is the neutrons relative mass and relative charge?

Answer 15

RM- 1

RC- 0

Question 16

What is the atomic number?

Answer 16

Number of protons (bottom number)

Question 17

What is the mass number?

Answer 17

Number of protons and number of neutrons (top number)

Question 18

What is an isotope?

Answer 18

Atoms with the same number of protons but different number of neutrons. This means they are atoms of the same element with the same atomic number but a different mass number.

Question 19

What is an ion?

Answer 19

Particles that contain a different number of protons and electrons. For example, an ion with 11 protons
(11+ charges) and 10 electrons (10– charges) has an overall charge of 1+

Question 20

What is the link between the electron structure of ions and noble gas atoms?

Answer 20

They all have an even number of electrons on their outer shell. Also they have the same electron structure.

Question 21

What are some physical properties of Group 1 metals?

Answer 21

They get softer as you go down, they are shiny on the inside/as soon as cut but then tarnishes by reacting to oxygen. Grey/dull silver.

Question 22

What is the trend in melting points in Group 1?

Answer 22

They all decrease as you go down.

Question 23

When group 1 elements react, what happens to their electron structure.

Answer 23

They lose the one electron on their outer shell.

Question 24

Where do these electrons go?

Answer 24

Passes onto the element reacting with it.

Question 25

What compound is formed when group 1 elements react?

Answer 25

Ionic compound

Question 26

Why is an ionic compound formed?

Answer 26

They lose one electron from the outer shell so it doesn't have the same amount of electrons as protons. This makes it like a noble gas electron structure.

Question 27

Why do group 1 elements react so much?

Answer 27

The single electron on the outer shell gets further away from the nucleus meaning the atom loses it more willingly and it is effected less from the pull of the nucleus so it reacts.

Question 28

What happens when you go down the group 1 elements?

Answer 28

Reactivity increases.

Question 29

What are group 1 elements also called?

Answer 29

Alkali metals.