Chemistry

Question 1

How do you work out the atomic number?

Answer 1

The number of protons / electrons

Question 2

How do you work out atomic mass?

Answer 2

Protons + neutrons

Question 3

What is the overall charge of an atom?

Answer 3

0

Question 4

Will a group 7 ion be negatively or positively charged?

Answer 4

Negatively (gains one ion for the outer shell)

Question 5

Who said atoms are tiny, hard spheres that cannot be split?

Answer 5

John Dalton

Question 6

Who came up with the plum pudding model?

Answer 6

J.J Thompson

Question 7

Who fired alpha particles at thin gold?

Answer 7

Ernest Rutherford

Question 8

Who found that atoms were mostly empty space?

Answer 8

Ernest Rutherford

Question 9

Who discovered the existence of electron shells?

Answer 9

Niels Bohr

Question 10

Who proved the existence of neutrons?

Answer 10

James Chadwick

Question 11

Name the order of the 5 scientists that explored atoms

Answer 11

Dalton, Thomson, Rutherford, Bohr, Chadwick

Question 12

What is the centre of an atom called?

Answer 12

Nucleus

Question 13

What is the atomic number of sodium?
Na23
11

Answer 13

11

Question 14

Will a group 1 ion be positively or negatively charged?

Answer 14

Positively (lose one electron to fill outer shell)

Question 15

Name 3 greenhouse gases

Answer 15

Carbon dioxide, Methane, Nitrous oxide

Question 16

Are metals insulators or conductors?

Answer 16

Conductor (of heat and electricity)

Question 17

Are non metals brittle or malleable?

Answer 17

Brittle

Question 18

Are non metals magnetic?

Answer 18

No

Question 19

How were periodic tables ordered before Moseley

Answer 19

By atomic mass

Question 20

Name a reason Newlands’ periodic table was rejected by other scientists

Answer 20

Some spaces had more than 1 element, As elements were added elements in the same group started having different properties

Question 21

What did Newlands’ notice about every 8th element?

Answer 21

They had similar properties

Question 22

What was Newlands’ periodic table called?

Answer 22

Newlands’ Octaves

Question 23

What did Mendeleev do that improved upon Newlands’ periodic table?

Answer 23

He left gaps for undiscovered elements

Question 24

What was Mendeleev able to do with his periodic table?

Answer 24

Make predictions about new elements

Question 25

How did Moseley more accurately group elements?

Answer 25

He ordered them by atomic number not atomic mass

Question 26

Why do elements in the same groups have similar properties?

Answer 26

They have the same number of electrons on the outermost shell

Question 27

What are group 1 metals also known as?

Answer 27

Alkaline metals

Question 28

How do group one metals react with water?

Answer 28

Violently producing heat and hydrogen gas

Question 29

How is CO2 produced?

Answer 29

Burning fossil fuels and chopping down trees

Question 30

How is Methane produced?

Answer 30

Cattle farming (cows)

Question 31

What is the difference between the enhanced greenhouse effect and the greenhouse effect?

Answer 31

The enhanced greenhouse effect is where extra greenhouse gases in our atmosphere trap too much of the Sun’s energy

Question 32

Name a way to dispose of used products

Answer 32

Landfill, recycle, up-cycle

Question 33

Name the 3 states of matter

Answer 33

Solid, liquid and gas