C1: Atomic Structure and the Periodic Table

Question 1

What is the charge of a proton?

Answer 1

Positive

Question 2

True or false: elements contain more than one type of atom?

Answer 2

False

Question 3

Give the formula for carbon dioxide:

Answer 3

CO_2

Question 4

Give the formula for sodium carbonate:

Answer 4

Na_2CO_3

Question 5

What is the difference between a compound and a mixture?

Answer 5

A compound is chemically bonded elements whereas a mixture is just the elements mixed together without the bonding

Question 6

What is the name of the pattern formed from carrying out paper chromatography?

Answer 6

A chromatogram

Question 7

Which method of separation is useful to separate an insoluble solid from a liquid?

Answer 7

Filtration

Question 8

Give two methods to separate a soluble solid from a liquid:

Answer 8

Evaporation and crystallisation

Question 9

Which method of distillation would you use to separate liquids with similar boiling points?

Answer 9

Fractional distillation

Question 10

Who discovered that the ‘plum pudding model’ was wrong?

Answer 10

Ernest Rutherford

Question 11

Who first devised an experiment that proved the existence of the neutron?

Answer 11

James Chadwick

Question 12

What is the electronic structure of sodium?

Answer 12

Na (2,8,1)

Question 13

Why did Mendeleev leave gaps in his Table of Elements?

Answer 13

To fit in elements that had not been discovered yet

Question 14

How are the group number and the number of electrons in the outer shell of an element related?

Answer 14

The number of the group represents how many electrons in the outer shell

Question 15

What kind of ions do metals form?

Answer 15

Positive ions

Question 16

Where are non-metals on the periodic table?

Answer 16

On the right hand side

Question 17

Give three properties which are specific to transition metals:

Answer 17

Have more than one ion, compounds make good catalysts and compounds are often colourful