Chapter 3 Question Preview (ID: 40311)
Pearson.
TEACHERS: click here for quick copy question ID numbers.
Chemistry is
a) a characteristic of a substance that can be observed without changing the substance into another substance.
b) the study of matter and how matter changes.
c) anything that has mass and takes up space.
d) a rapid reaction between oxygen and a substance called a fuel.
The only sure evidence for a chemical reaction is
a) the formation of a gas.
b) a color change.
c) the production of one or more new substances.
d) changes in properties.
A material used to decrease the rate of a chemical reaction is a(n)
a) inhibitor.
b) catalyst.
c) enzyme.
d) fuel.
CaCO3 represents a chemical
a) symbol.
b) formula.
c) subscript.
d) reaction.
In chemical reactions, what does the principle of conservation of mass mean?
a) Matter is not created or destroyed.
b) The total mass of the reactants is greater than the total mass of the products.
c) The total mass of the reactants is less than the total mass of the products.
d) Matter is not changed.
Chemicals that act as biological catalysts by speeding up reactions in living things are called
a) inhibitors.
b) enzymes.
c) fuels.
d) reactants.
What type of reaction is FeS + 2 HCl FeCl2 + H2S?
a) a synthesis reaction
b) a decomposition reaction
c) a single replacement reaction
d) a double replacement reaction
What happens when chemical bonds break and new bonds form?
a) a physical change
b) a chemical change
c) matter is destroyed
d) surface area increases
A shorter, easier way to show a chemical reaction, using symbols instead of words, is called a
a) chemical equation.
b) chemical formula.
c) symbol.
d) subscript.
The substances listed on the left side of a chemical equation are the
a) products.
b) coefficients.
c) precipitates.
d) reactants.
A chemical reaction that absorbs energy in the form of heat is described as
a) endothermic.
b) exothermic.
c) combustion.
d) unbalanced.
The minimum amount of energy needed to start a reaction is the
a) exothermic energy.
b) endothermic energy.
c) activation energy.
d) chemical energy.
When a chemical reaction takes place in an open system,
a) matter can enter from or escape to the surroundings.
b) matter is not allowed to enter from or escape to the surroundings.
c) matter can enter from the surroundings, but cannot escape to the surroundings.
d) matter cannot move at all.
Physical changes occur when existing bonds break and new bonds form.
a) True
b) False
c)
d)
The amount of matter in a chemical reaction changes.
a) True
b) False
c)
d)
Synthesis is the process of making a more complex compound from simpler substances.
a) True
b) False
c)
d)
A precipitate is a(n) ____________________ that forms from solution during a chemical reaction.
a) replacement
b) solid
c) chemical
d) products
In a chemical equation, the substances written on the right side of the arrow are called ____________________.
a) concentration
b) decomposition
c) products
d) inhibitor
The _________________________ is the minimum amount of energy that must be added to start a chemical reaction.
a) activation energy
b) conservation of mass
c) exothermic
d) open system
The ____________________ is the amount of one material present in a given volume of another material.
a) chemical
b) solid
c) inhibitor
d) concentration
Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 40311 in the upper right hand corner or click here.
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 40311 in the upper right hand corner or click here.
TEACHERS / EDUCATORS
Log In | Sign Up / Register
Log In | Sign Up / Register