Lesson Worksheet: Physical and Chemical Changes Science
In this worksheet, we will practice describing and identifying physical and chemical changes.
Q1:
Amira has matched some science words to their meaning.
Is she correct?
- AYes
- BNo
Q2:
This photo shows iron that has been heated to a high temperature and has melted. Iron melting is an example of a physical change.
Fill in the blanks: During a physical change, the of a material changes, but not the .
- Aappearance, chemical structure
- Bchemical structure, appearance
Q3:
Water can exist as ice, water, or water vapor.
Select the physical change that is happening at arrow 4.
- ACondensation
- BEvaporation
- CFreezing
- DMelting
Q4:
Amelia has grouped 5 facts about chemical and physical changes:
Select the number of the fact that is in the wrong place.
Q5:
Daniel added a few drops of acid to a spoonful of sodium bicarbonate. A new substance formed.
What type of change is this?
- AA chemical change
- BA physical change
Q6:
Mason and Olivia add a sugar lump to a cup of tea. They stir the tea and then taste it. It tastes sweet.
They, then, grind up a sugar lump, add it to another cup of tea, and stir.
They talk about how the tea will taste.
Who is right?
- AMason
- BOlivia
Q7:
Benjamin heats some salt solution to evaporate off the water and get back the salt.
Is this an example of a physical or a chemical change?
- AChemical
- BPhysical
Q8:
A class are investigating what happens when you mix together vinegar and bicarbonate of soda.
The photograph shows what happened when they tried.
The class placed a balloon over the mixture in the bottle and it inflated. This proves that a new substance was produced.
Which state of matter was produced?
- AA gas
- BA solid
- CA liquid
What evidence do the class have that the mixture reacted to produce a change of state?
- AThe bicarbonate of soda dissolved.
- BThe bicarbonate of soda melted.
- CThe balloon inflated.
Q9:
Fill in the blank: A physical change is reversible because the chemical structure of the material altered.
- Ais
- Bis not
Q10:
Chocolate melting is an example of a physical change.
Which of these is also an example of a physical change?
- ABoiling an egg
- BFreezing orange juice
- CBurning wood
- DCooking a sausage
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