Chemistry

Atomic Structure + Periodic Table

100

Who proposed the idea that atoms are indivisible and indestructible particles?

Democritus

200

Which subatomic particles are found inside the Nucleus

Protons and Neutrons

300

Who conceptualised the first periodic table

Dmitri Mendelev

400

What is an isotope / radioactive isotopes

Elements with a different amount of neutrons OR An unstable combination of protons and neutrons, creating an unstable isotope

500

What are group 7 elements called? State their traits

Halogens, reactive non-metals, decrease as you go down the group

Chemical Bonding

100

Two non-metals share valence electrons, what is this bond called?

Covalent Bond

200

Which type of element (metal or non-metal) typically loses electrons to form positive ions?

Metals

300

What is a giant covalent structure, provide an example

Multiple atoms combine with each other to form a compound, they are also called macro molecules

Examples : Graphite, Silicon Dioxide, Diamond

400

Give me the term for positive and negative ions

'cations' for positive
'anions' for negative

500

What is polarity?

This property, caused by unequal sharing of electrons in a bond, affects boiling points and solubility in molecules like HCl.

Stochiometery

100

The molar mass of this compound is 18g

H₂O

200

What is a mole

Unit of measurement for substances OR giving the SI Unit 6.02 x 10²³

300

2H₂ + O₂ → 2H₂O
If you have 2 moles of H₂, how many moles of H₂O can be produced?

2 moles

400

If i have the molar mass and mass of a substance, how do I find the number of moles?

Divide mass by molar mass

500

Al+Fe₂O₃→Al₂O₃+Fe

Which is the limiting reactant?

Aluminium : 10g

Iron(III) oxide (Fe₂O₃) = 35 g

Aluminium

Chemical Reactions

100

In this type of reaction, zinc replaces hydrogen in hydrochloric acid.

Single Displacement

200

Balance the equation Al + O₂ → Al₂O₃

4Al + 3O₂ → 2Al₂O₃

300

___ H₂ + ___ O₂ → ___ H₂O

2 H₂ + 1 O₂ → 2 H₂O

400

What is the Law of Conservation of Mass?

The mass of the products must equal the mass of the reactants as atoms cant be created or destroyed

500

this shouldn't be worth 500 but we ball

What does pH stand for, give me an example of a pH indicator

power of hydrogen

Red/Blue Litmus

Universal

Methyll Orange

phenoplhatnajsia im not spelling this.

Environmental Chemistry

100

This greenhouse gas is released by the burning of fossil fuels.

CO₂

200

These two gases are the main contributors to acid rain.

SO₂ and NO_x

300

Name at least 3 renewable sources of energy

Solar, Wind, Hydropower, Geothermal, Biomass, Tidal. (More are allowed)

400

Name at least 3 negative effects of acid rain

Damage to forests

Damage to Buildings and Monuments

Soil Degradation

Human Health Impacts (Indirect)

Wildlife Damage

500

Solutions to acid rain

no given answer, just guess lmao