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Atomic Structure
Periodic Table
Isotopes & Decay
Ions
Chemical Equations
100
Subatomic particle with positive charge

Proton

100

What is the atomic number of hydrogen?

1

100

Define an isotope.

Same element, different number of neutrons.

100

Define an ion

Same element, different number of electrons 

100

If 4 grams of hydrogen reacts with 32 grams of oxygen to form water, how much water is produced?

4 g + 32 g = 36 g of water

200

Subatomic particle with negative charge

Electron

200

What is the atomic mass of oxygen?

16 amu

200

Name 2 isotopes of carbon-12.

Carbon-13, Carbon-14

200

What is a cation?

Positively charged ion (lost electrons)

200
Define the conservation of mass.

Matter cannot be created or destroyed

300

Subatomic particle with neutral/no charge

Neutron

300

How do you determine the number of electrons in an atom from the periodic table?

Same as atomic number (number of protons)

300

What is a half-life?

The amount of time it takes for half of a substance to undergo radioactive decay

300

What is an anion?

A negatively charged ion (gained electrons)

300

Balance the equation:

H2 + O2 -> H2O

2H2 + O2 -> 2H2O

400

How many electrons can fit into the second shell?

8

400

How do you determine number of neutrons from the periodic table?

Atomic mass - atomic number = neutrons

400

Explain the process of alpha decay, including why and what happens

Alpha decay occurs when the nucleus of an isotope is too heavy

It will emit a helium nucleus to stabilise

The atomic number will decrease by 2 and atomic mass decrease by 4

400

How does the electron configuration of a sodium ion differ from that of a sodium atom?

Sodium+ ion: 2.8 (lost 1 electron)

Sodium atom: 2.8.1

400

Balance the equation:

CO2 + H2 -> CH4 + O2

CO2 + 2H2 -> CH4 + O2

500

Write the electron configuration for chlorine

2.8.7

500
Explain why noble gases are unreactive.

They have full valence shells

500

Explain the process of beta decay, including why and what happens

Beta decay occurs when there are too many neutrons in the nucleus

It will convert a neutron to a proton and emit an electron

The atomic number will increase by 1 and atomic mass will not change

500

Explain why ions bond to form compounds

Ions bond together to stabilise by filling their valence shells.


500

Balance the equation:

C2H6 + O2 -> CO2 + H2O

2C2H6 + 7O2 -> 4CO2 + 6H2O