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WorksheetsQuarter 2 BMA
Total questions: 20
Worksheet time: 2hrs 40mins
A chemical change is different than a physical change because in a chemical change
Chemicals are used
Molecules do not physically touch
A new substance is formed and in a physical change no new substance is formed
The change can be seen but in a physical change it cannot
In a chemical reaction
The atoms of the reactants always stay together to form the products
The atoms of the reactants un-bond, rearrange, and then re-bond to form the products
New atoms are formed which combine to make the products
Some atoms disappear while other multiply to form the products
One clue of a chemical change is the formation of a precipitate. A precipitate is formed when
Two liquids react and a gas is produced
A solid dissolves in a liquid
One liquid dissolves in another
Two liquids react and a solid is formed
In a chemical reaction, if the reactants are heated, the reaction usually happens
Faster
Slower
At the same rate
In a smaller volume
Which gas is taken in by the plants, from the air during photosynthesis?
Hydrogen
Oxygen
Nitrogen
Carbon Dioxide
What is cellular respiration?
the breakdown of glucose to release ATP
the breakdown of glucose to release NADH
the breakdown of glucose to release FADH
the breakdown of glucose to release carbon
When water evaporates
The motion of the water molecules causes them to stay in the liquid state
The motion of the water molecules causes them to leave the liquid state and become a gas
The water increases in mass
Water molecules separate into one oxygen atom and two individual hydrogen atoms
When water vapor condenses
Water vapor changes from a liquid to a gas
Water vapor changes from a gas to liquid
One oxygen and two hydrogen atoms join to form a water molecule
The water molecules spread further apart
Identify the following as a chemical or physical change:
Making a peanut, pretzel, and cereal mixture
Physical
Chemical
Identify the following as a chemical or physical change:
Baking soda reacts with vinegar and forms a gas
Physical
Chemical
Identify the following as a chemical or physical change:
Methanol is burned and leaves a residue
Physical
Chemical
Identify the following as a chemical or physical change:
An aspirin is crushed into fine powder
Physical
Chemical
Is glucose a product or reactant in photosynthesis?
Product
Reactant
Is water a product or reactant in photosynthesis?
Product
Reactant
Is oxygen a product or reactant in photosynthesis?
Product
Reactant
Is glucose a product or reactant in cellular respiration?
Product
Reactant
Is water a product or reactant in cellular respiration?
Product
Reactant
Is oxygen a product or reactant in cellular respiration?
Product
Reactant
What is the purpose of sunlight in photosynthesis?
Break bonds between water molecules
Provide carbon dioxide to the plant
Help the water molecules evaporate
Give the plants energy for photosynthesis
What gas is given off during photosynthesis?
Oxygen
Carbon Dioxide
Methane
ATP
