Particles and Elements (Chemistry)

Question 1

What is H2O made up of?

Not needed for test

Answer 1

Each water molecule is made up of 2 hydrogen and 1 oxygen

Question 2

What are the rows in the Periodic Table called?

Answer 2

Periods

Question 3

What makes up a nucleus?

Answer 3

Protons and neutrons

Question 4

Molecules

Answer 4

Combination of atoms

Question 5

What are melting and freezing examples of?

Answer 5

Physical change

Question 6

Physical change

Answer 6

• Reversible
• Change of state
• Individual particles
  retain their original
  properties
• Doesn’t change
  chemically

Question 7

Gas

Answer 7

• No contact
• Random
• Fill the space
• Free to move
• Compressible
• Can mix

Question 8

Which two liquids in the Periodic Table are liquids at room temperature?

Answer 8

Mecury (Hg) and Bromine (Br)

Question 9

What are the columns in the Periodic Table called?

Answer 9

Groups

Question 10

What are all the other elements?

Answer 10

Solids

Question 11

Atomic number

Answer 11

Shows how many protons in nucleus and how may electrons orbiting

Question 12

Is an electron’s charge positive, negative or neutral?

Answer 12

Negative

Question 13

What is another name for Group 8?

Answer 13

Group 0

Question 14

How do you raise the temperature?

Answer 14

By adding energy

Question 15

What is Group 8?

Answer 15

Noble gases

Question 16

How many gases are there in the Periodic Table?

Answer 16

12 gases

Question 17

What is raising the temp. of a solid to get a liquid called?

Answer 17

Melting

Question 18

What group is noble gases?

Answer 18

Group 8/0

Question 19

Electrons

Answer 19

Negative charge, orbits nucleus

Question 20

Is a neutron’s charge positive, negative or neutral?

Answer 20

Neutral

Question 21

What happens if you lower the temp. of a liquid?

Answer 21

A solid forms

Question 22

What happens if you raise the temp. of a liquid?

Answer 22

A gas forms

Question 23

Matter

Answer 23

Stuff that makes up everything around us

Question 24

Is a protons’ charge positive, negative or neutral?

Answer 24

Positive

Question 25

Which group are alkali metals?

Answer 25

Group 1

Question 26

In what order does the Periodic Table show the chemical elements?

Answer 26

Increasing order

Question 27

What happens if you lower the temp. of a gas?

Answer 27

A liquid forms

Question 28

What is lowering the temp. of a liquid to get a solid called?

Answer 28

Freezing

Question 29

Chemical change

Answer 29

- Often irreversible - Rearranges the atoms - Makes a new substance - Often results in a colour change

Question 30

Liquids

Answer 30

- Some contact - Random - At bottom of box - Some freedom - Can mix

Question 31

Who created the current version of the Periodic Table and when?

Answer 31

Mendeleev in 1869

Question 32

What is Group 1?

Answer 32

Alkali metals

Question 33

Why don't some common chemicals show up in the Periodic Table?

Answer 33

Because they are compounds.

Question 34

Which group are halogens?

Answer 34

Group 7

Question 35

What is the formula for finding the neutron number?

Answer 35

Atomic mass- atomic number = Neutron number

Question 36

What is Group 7?

Answer 36

Halogens

Question 37

What is matter made up of?

Answer 37

Tiny particles called atoms

Question 38

What happens if you raise the temp. of a solid?

Answer 38

A liquid forms

Question 39

How many chemical elements does the Periodic Table show?

Answer 39

118

Question 40

Atomic mass

Answer 40

Protons+ neutrons in nucleus

Question 41

Solids

Answer 41

- Closely packed - Neatly arranged - Bottom of box - Little movement - Incompressible - Cannot be mixed