Fundamental Ideas In Chemistry

Question 0

What is an element

Answer 0

A substance that is made of only one type of atom

Question 1

What is an atom

Answer 1

All substances are made from atoms

Question 2

Where would the transition metals be in the periodic table?

Answer 2

In the middle

Question 3

Where would you find metals and non metals in the periodic table?

Answer 3

Metals to the left

Non metals to the right

Question 4

Match the name of the element with the symbol:
O
H
Na
Ar
Ca
Cu

Answer 4

Oxygen
Hydrogen
Sodium
Argon 
Calcium
Copper

Question 5

What are the relative electrical charges of:
Proton
Neutron
Electron

Answer 5

Proton +1
Neutron 0
Electron -1

Question 6

Explain why atoms have no overall electrical charge

Answer 6

The number of protons are equal to the number of electrons

Question 7

What does the atomic number tell you?

Answer 7

The number or protons
Or
The number or electrons

Question 8

What does the mass number tell you?

Answer 8

The sum of the protons and neutrons

Question 9

Explain why elements in the same group of the periodic table have similar properties

Answer 9

Elements in the same group have the same number of electrons in their outer shell

Question 10

The elements in group 0 (the noble gases) are very unreactive, explain why?

Answer 10

They have 8 electrons in their outer shell apart from helium which has 2