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WorksheetsTypes of Chemical Reactions
Total questions: 40
Worksheet time: 46mins
Complete the word equation below:
Acid + base (alkali) --> ............... + water
water
salt
gold
metal
is a base
is a neutral substance
could be either an acid or a base
is an acid
What colour is Universal indicator when the solution is neutral? (think of the lab)
Red
Green
Blue
Purple
What type of reaction occurs when you react an acid with a base (alkali)?
combustion
decomposition
no reaction
neutralisation
ph range of acids are .....
0-6
7
8-14
4-10
ph range of bases (alkalis) is .....
0-6
7
8-14
4-10
What colour change would you see if you added nitric acid to sodium hydroxide (base) and universal indicator? (think of your lab)
red -> blue
purple -> green
red -> yellow
pink -> colourless
The reaction between _______ and _______ is known as ________.
Base, Salt, Neutralisation
Acid, Water, Combination
Acid, Base, Decomposition
Acid, Base, Neutralisation
What are the three elements must be present for a fire to occur?
oxidizing agent, ignition temperature, fuel
fuel, carbon, ignition temperature,
oxidizing agent, flame, ignition temperature,
oil, nitrogen, oxidizing agent
A material which combusts and releases heat while it burns is called:
a fuel
a source of ignition temperature
a source of oxidizing agent
Tick all the examples of a fuel
wood
air
paper
water
diesel
Tick all the sources of ignition temperature.
a lighter
a spark
friction
gasoline
wood
To turn off a fire one of the sides of the fire triangle must be removed. What is being removed when the teacher covers a candle with a glass plate.
Oxidizing agent (oxygen)
ignition temperature (heat)
fuel
To turn off a fire one of the sides of the fire triangle must be removed. What is being removed when someone turns off the gas stove by rotating the knob?
oxidizing agent
ignition temperature (heat)
fuel
To turn off a fire one of the sides of the fire triangle must be removed. What is being removed when someone throws a sand on a campfire?
oxidizing agent
ignition temperature (heat)
fuel
To turn off a fire one of the sides of the fire triangle must be removed. What is being removed when someone uses a fire blanket on a burning pan?
oxidizing agent
ignition temperature
fuel
To turn off a fire one of the sides of the fire triangle must be removed. What is being removed when someone uses water to put out a burning tree?
oxidizing agent
ignition temperature
fuel
A match stick is on fire. What is the source of oxidizing agent?
friction
wood
air
A match stick catches fire. What is the source of ignition temperature?
friction
wood
air
A match stick is on fire. What is the source of fuel?
friction
wood
air
What is the scientific name for burning?
combustion
flammable
convection
Photosynthesis is a biological process that occurs in autotrophs. Which of the following is produced as a result of photosynthesis?
Water and light
Glucose and chlorophyll
Glucose and oxygen
Carbon dioxide and water
Where do the reactions of photosynthesis take place in autotrophs?
Chloroplast
Mitochondria
Cell Walls
Cytoplasm
Where does the energy for plants to perform photosynthesis come from?
Breaking down ATP
sunlight
glucose metabolism
None of the Above
What is the chemical equation for photosynthesis? Choose the BEST answer
C6H12O6 + O2 -> CO2 + H2O
CO2 + H2O --> C6H12O6 + O2
6 CO2 + 6 H2O --> C6H12O6 + 6 O2
C6H12O6 + 6 O2 -> 6 CO2 + 6 H2O
Cellular Respiration involves the chemical breakdown of _____ to form cellular energy (ATP)
Fats
Fructose
Glucose
Proteins
Which of the following chemical equations properly demonstrates Cellular Respiration? Choose the BEST answer.
C6H12O6 + O2 --> H2O + CO2
H2O + CO2 -> C6H12O6 + O2
C6H12O6 + 6 O2 -> 6 H2O + 6 CO2
6 H2O + 6 CO2 -> C6H12O6 + 6 O2
True of False, Plants can perform Cellular Respiration and Photosynthesis
False
True
oxygen and carbon dioxide
light and water
What is one of the reactants (raw materials) going into cellular respiration?
Energy
Sugar (Glucose)
Carbon dioxide
Water
Which organism(s) perform cellular respiration?
animals only
plants only
both animals and plants
decomposers
What type of reaction occurs when someone takes an antacid for 'heartburn'.
Photosynthesis
Cellular respiration
Combustion
Acid / base neutralization
What type of reaction occurs when fireworks go off?
Photosynthesis
Slow combustion
Rapid combustion
Acid / base neutralization
What type of reaction occurs when leaves rot?
Photosynthesis
Slow combustion
Rapid combustion
Acid / base neutralization
What type of reaction occurs when lime is spread over a lake (liming)?
Photosynthesis
Slow combustion
Rapid combustion
Acid / base neutralization
In a neutralisation reaction, ______ and ______ are produced.
Base, Salt,
Acid, Water,
Acid, Base,
Salt, Water.
In a neutralisation reaction, ______ and ______ react.
Base, Salt,
Acid, Water,
Acid, Base,
Salt, Water.
What are the two signs of rapid combustion?
light and sound
light and heat
heat and smoke
An airplane flies over a lake where the fish are dying due to acid rain. It releases a white powder into the lake. This process is called ______.
photosynthesis
slow combustion
rapid combustion
liming
