Physical and chemical changes
Authored by Vicky Oxenham
Chemistry, Science
8th Grade
Used 223+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
________________ are reversible and have some of the properties of their substance change
Physical changes
Chemical changes
Reactants
Products
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
_______________ are irreversible and have one or more new substances formed
Physical changes
Chemical changes
Reactants
Products
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The signs of a chemical change are
Temperature change
Gas is produced
Colour change
Precipitate
All of the above
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A precipitate is
When a gas is produced (usually also producing bubbles)
The smallest particle of an element
A solid formed from two solutions
A metal which is malleable
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Sodium + water -----> Sodium hydroxide +hydrogen
The product/s are
Sodium
Sodium + water
Sodium hydroxide
Sodium hydroxide + hydrogen
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Iron + oxygen ----> Iron oxide
The reactant/s are
Iron
Iron + oxygen
Iron oxide
Iron + oxygen ---> Iron oxide
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is an example of a wanted chemical reaction?
Cesium reacted with water
Digestion
Acid rain
Chemical weapons
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