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WorksheetsProperties of Matter and Chemical Reactions
Total questions: 26
Worksheet time: 21mins
Matter is anything that has (a) and takes up space.
What is mass?
Mass tells us how much space something takes up.
Mass is a measurement of the amount of matter.
Mass is a measurement that increases when temperature increases.
Mass is the same as size.
A solid candy bar has a mass of 18 grams. A student melted the candy bar until it became a liquid. What is the mass of the candy bar as a liquid?
9 grams because the mass of a substance reduces by half during a phase change.
16 grams because a liquid has a slightly lower mass than a solid.
20 grams because a liquid has a slightly higher mass than a solid.
18 grams because the total mass of matter remains the same during a phase change.
1. Matter can change through both physical and chemical changes. What is always true about matter, even after it changes its form?
The matter releases heat energy.
Some of the matter is destroyed
New matter is created.
The amount of matter is the same.
Mass can be created and destroyed in a chemical reaction.
The total mass before a chemical reacteion is the same as the total mass after the reaction.
Every reaction creates an equal amount of mass related to the amount of energy required for the reaction.
The total amount of mass is equal to the volume of both chemicals in the reaction
Lighting a match
Dissolving salt into water.
evaporating milk
melting wax
water evaporating and color change
bubbles forming and temperature change
breaking glass and icicles forming on the roof
True
False
Burning paper
melting wax
freezing water
dissolving salt into water
A
B
What do we call substances that are before chemical reactions?
reactants
products
equations
solids
What do we call substances that are after a chemical reaction?
reactants
products
equations
solids
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
reactants
products
solids
I don't know.
What is the right part of a chemical equation called?
2H2 + O2 --> 2H2O
reactants
products
chemical equations
I don't know
What is a chemical reaction?
A process where atoms are destroyed
A process where new substances are formed
A process where substances remain unchanged
A process where atoms are created
What can properties of matter help us determine?
The color of the substance
The taste of the substance
What the substance is
The sound of the substance
What is an example of a physical change?
Burning wood
Dissolving salt in water
Rusting iron
Baking a cake
What is the main difference between physical and chemical changes?
Physical changes form new substances.
Chemical changes do not involve energy.
Physical changes do not form new substances.
Chemical changes are reversible.
What determines how a substance interacts with other substances?
Color
Shape
Properties
Size
C3H8 (propane) + 5O2 ---> 3CO2 + 4H2O
How many oxygen atoms are on each side of the combustion of propane equation?
5
10
15
20
What is a change in state of matter where no new substance is formed?
Chemical change
Physical change
Reactants
Products
A reaction that releases energy, usually in the form of heat is called __________________
Exothermic reaction
Endothermic reaction
Law of conservation
Chemical reaction
A reaction that absorbs energy is called __________________.
Endothermic reaction
Exothermic reaction
Law of conservation
Synthesis
