Chemistry

Atomic Structure

100

What are the elements in Group 8/0 called ?

Noble Gases

200

What number do you use to find the number of protons?

Atomic Number

300

How many electrons does a Calcium (Ca²⁺) ion have?

18

400

Calcium Phosphate has how many elements present?

3. Calcium, Phosphorous and Oxygen

Bonding

100

How many diatomic elements are there?

7

200

Ionic bonding happens between what?

A metal and a non metal

300

What is a covalent bond?

Atoms share electrons to achieve a full outer shell of electrons

400

What is the greatest number of covalent bonds that one carbon atom can form?

4

Reaction Rate

100

What happens to the reaction rate when a catalyst is added?

Increases

200

What happens to the reaction rate if the concentration of acid increases?

Increases

300

What happens to the rate of a reaction if the particle size is increased?

decrease

400

What are the unit for reaction rate if the volume of gas is measured every 15seconds?

cm³ s ^-1

Homologous Series

100

What elements are present in ALL hydrocarbons?

Hydrogen and Carbon

200

Which is a longer chain alkene: Propene or Octene

Octene

300

What is the general formula for alkanes?

C_nH_2n+2

400

What is an isomer?

Compounds with the same molecular formulae but different structural formulae.