Physical And Chemical Change Question Preview (ID: 36253)


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Which of the following is a chemical change?
a) cutting
b) melting
c) rusting
d) bending

Which statement is true about physical changes and chemical changes?
a) chemical changes are not observable
b) chemical changes always produce new substances
c) physical changes can change both physical and chemical properties
d) physical and chemical changes can not happen at the same

Which of the following is a chemical change?
a) mixing
b) melting
c) tarnishing
d) grinding

Which of the following is a physical change?
a) frying an egg
b) baking a cake
c) burning wood
d) mixing cookie dough

Which of the following is NOT a physical change?
a) dying your hair
b) breaking an egg
c) adding food coloring to water
d) nailing together boards of wood

Which of the following is an example of a chemical change?
a) ice melting in a glass
b) wood burning in a fireplace
c) defrosting food in the microwave
d) putting on make-up

Which of the following is NOT a chemical change?
a) salt being mixed with water
b) silver tarnishing in open air
c) antacid that neutralizes stomach acid
d) bicycle rusting

Scientists study the characteristics of substances to better understand the natural world. Which of the following is not a chemical or physical characteristic of a substance?
a) odor
b) density
c) cost
d) color

Which of the following is evidence of a chemical change?
a) color change
b) bubbles
c) heat forming
d) all of the above

You blow dry your wet hair. What type of change?
a) Physical
b) Chemical
c) -
d) -

You forgot to dry the bread knife when you washed it and reddish brown spots appeared on it. (Rust)
a) Physical
b) Chemical
c) -
d) -

True or False. When ice cream melts, a chemical change occurs.
a) True
b) False
c) -
d) -

In a fireworks show, the fireworks explode giving off heat and light. What type of change?
a) physical
b) chemical
c) no change
d) -

Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change.
a) chemical, chemical
b) physical, physical
c) physical, chemical
d) chemical, physical

A straight piece of wire is coiled to form a spring. What type of change?
a) physical
b) chemical
c) no change
d) -

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