Elements And Atoms

Question 1

What is an element?

Answer 1

An element is a substance that cannot be broken down further

Question 2

Why do element have different properties?

Answer 2

Elements have different properties because they are made of different atoms

Question 3

What is an Atom

Answer 3

The smallest particle of a chemical element that can exist

Question 4

What are the only two elements which exist as liquids at room temp?

Answer 4

Mercury and Bromine

Question 5

List is the 11 elements that exist as gases under normal conditions:

Answer 5

Helium. He
Neon. Ne
Argon. Ar
Krypton. Kr
Xenon. Xe
Radon. Rn
Carbon. C
Nitrogen. N
Oxygen. O
Fluorine. F
Iodine. I
Chlorine. Cl

Question 6

What are the properties of Sodium?

Answer 6

Sodium is a soft, silvery white metal with a melting point of 98 Celsius and a boiling point of 884 Celsius

Question 7

What are the properties of Chlorine?

Answer 7

Chlorine is a yellow-green gas with a melting point of -101 Celsius and a boiling point of -34 Celsius

Question 8

What is a Compound?

Answer 8

A compound is 2 or more different elements joined together.

Question 9

What compound is formed between sodium and chlorine and what are the properties of this compound?

Answer 9

NaCl
NaCl is a white solid with a melting point of 801 Celsius and a boiling point of 1420 Celsius.

Question 10

What colours are produced when aluminium is heated?

Answer 10

Silvery White

Question 11

What colours are produced when Calcium is heated?

Answer 11

Orange

Question 12

What colours are produced when Copper is heated?

Answer 12

Green

Question 13

What colours are produced when Lithium is heated?

Answer 13

Red

Question 14

What colours are produced when Magnesium is heated?

Answer 14

White

Question 15

What colours are produced when Sodium is heated?

Answer 15

Golden-Yellow

Question 16

What colours are produced when Caesium is heated?

Answer 16

Blue

Question 17

Hydrogen

Answer 17

H

Question 18

Nitrogen

Answer 18

N

Question 19

Calcium

Answer 19

Ca

Question 20

Copper

Answer 20

Cu

Question 21

Helium

Answer 21

He

Question 22

Cobalt

Answer 22

Co

Question 23

Gold

Answer 23

Au

Question 24

Silver

Answer 24

Ag

Question 25

Iron

Answer 25

Fe

Question 26

Lead

Answer 26

Pb

Question 27

Oxygen

Answer 27

O

Question 28

Caesium

Answer 28

Cs

Question 29

Chlorine

Answer 29

Cl

Question 30

Sulphur

Answer 30

S

Question 31

Carbon

Answer 31

C

Question 32

Sodium

Answer 32

Na

Question 33

Potassium

Answer 33

K

Question 34

Mercury

Answer 34

Hg

Question 35

Tin

Answer 35

Sn

Question 36

List all Alkaline Metals from the 1st, 20 list of elements

Answer 36

Lithium. Li
Sodium. Na
Potassium. K

Question 37

List all Alkaline Earth Metals from the 1st, 20 list of elements

Answer 37

Beryllium. Be
Magnesium. Mg
Calcium. Ca

Question 38

List all Metalloids from the 1st, 20 list of elements

Answer 38

Boron. B
Silicon. Si

Question 39

List 1 poor metal from the 1st, 20 list of elements

Answer 39

Aluminium. Al

Question 40

List all Non-Metallic Gasses from the 1st, 20 list of elements

Answer 40

Helium. H
Carbon. C
Nitrogen. N
Oxygen. O
Phosphorus. P
Sulphur. S

Question 41

List all halogens from the 1st, 20 list of elements

Answer 41

Fluorine. F
Chlorine. Cl

Question 42

List all Noble Gasses from the 1st, 20 list of elements

Answer 42

Helium. He
Neon. Ne
Argon. Ar

Question 43

What is the difference between an atom and a molecule?

Answer 43

Molecules are atoms bound together by chemical bonds. Atoms are particles that make up matter.