Materials
Name the type of reaction in which heat is given out.
Exothermic.
a change in which one or more new substances are made.
Name three pieces of equipment required for filtration.
Name three factors that will affect the rate of a reaction
Concentration, Temperature, Surface area
What is the logo used for snapchat?
a white ghost
State what many monomers form and give a common example of this.
Polymer, e.g. Plastic.
Describe 2 observations you would make when potassium reacts with water.
Any 2 from:
Fizzing, Potassium gets smaller, moves around on the surface of the water, forms a ball, Lilac flame
Describe the technique that can be used to separate salty water so as to get pure water. (2 points should be made)
The salty water is heated until the water exaporates
Steam reaches the condenser and is colled/turns back to liquid
Define ion.
An atom that has lost or gained electron(s)
What is the name of the fungal infection that caused a global pandemic in the TV series The Last of Us?
Cordyceps
State 3 properties of ceramics that make them useful.
Any 3 from: Hard, Brittle, High MP, Good insulators, Inert/Unreactive
Magnesium Sulfate and Water
Write a word equation to show the displacement reaction between copper and silver nitrate.
Copper + Silver Nitrate --> Copper Nitrate
Balance the following equation:
CuO + HCl --> CuCl2 + H2O
CuO + 2HCl --> CuCl2 + H2O
Name the male lead actor in Barbie movie.
Ryan Gosling
Describe the difference between cement and concrete.
Cement is a substance that binds materials together OR mix of lime and clay whereas Concrete is artifical stone made from a mix of sand, cement, water and aggregate larger stones.
Write a word equation to show the reaction between lithium and water.
Lithium + Water --> Lithium Hydroxide and Hydrogen
Describe how electrolysis works to extract sodium.
Electricity is used to break down sodium oxide into sodium and oxygen gas.
Element A is found in group 2 and period 3 of the periodic table. What does this mean for an atom of this element?
Element A will have 2 electrons in it's outer shell and will have 3 shells in total.
Name the artist and song that has the most streams on spotify of all time.
The Weeknd - Blinding Lights
Describe what is meant by vulcanisation.
When rubber is heated with sulfur, cross links are formed between the rubber molecules.
Write a balanced chemical equation to show the combustion of Methane (CH4)
CH4 + 2O2 --> CO2 + 2H2O
Calculate the percentage loss when 12.5g of Calcium Carbonate decomposes to 8.0g of Copper Oxide.
12.4 - 8.0 = 4.4g
4.4/12.4 x 100 =
35.5%
has an atomic number of 19 and an atomic mass number of 39. How many electrons, protons and neutrons does an atom of this element have?
19 Protons
19 Electrons
20 Neutrons
What is the highest possible score in a game of bowling?
300 points