WorksheetsPhysical and Chemical Changes
Total questions: 15
Worksheet time: 4hrs 45mins
A physical change is a change that does not cause a new substance to form. Which is an example of a physical change?
A glass breaking
A dead plant rotting
A candlewick burning
An iron crowbar rusting
A change in color or smell is a sign of what?
size change
state change
texture change
chemical change
Chemical changes occur when the molecules of one substance are rearranged to form a different substance. Which of the following is a chemical change?
bending
burning
freezing
shredding
Daniel has a list of chores to do around the house. Which of his chores is an example of a chemical change?
Cooking eggs for breakfast
Oiling a squeaky door hinge
Sewing a hem on a pair of pants
Digging weeds in the flowerbeds
Chefs use physical and chemical changes in their kitchens. Which statement tells how a cook uses physical changes when making food?
Frying an egg
Rolling out a pie crust
Baking biscuit dough in an oven
Waiting for a banana to ripen
A chemical change forms a new kind of matter. Which is a chemical change?
Rusting steel
Cutting Bread
Pouring Water
Breaking Glass
When steel wool is soaked in water and then exposed to air, it slowly rusts. What do you observe when steel wool has rusted?
The steel wool turns red and brittle
The steel wool turns white and soft
The steel wool turns black and green
The steel wool turns strong and shiny
A plant or animal that has died will decay overtime. Decaying is a chemical change. What observations show that decaying is a chemical change?
A change in size and shape
A change in color and smell
Having the same state of matter
Having the same temperature
Bonnie uses steel wool to sand model race cars. She knows that steel wool can rust. Where should she store the steel wool to keep it from rusting?
In a dry place
In a wet place
In a dark place
In a damp place
Wood that is burning in a brush pile has heat, and produces ashes.
Physical
Chemical
Is milk going sour a physical or chemical change?
Physical
Chemical
