NEW
Font size
WorksheetsChapter 23 - Chemical Reactions
Total questions: 20
Worksheet time: 2hrs 40mins
What part of a chemical reaction is shown on the right side of the arrow?
Reactants
Products
Yields
Aqueous
In a chemical equation, what number precedes a formula and represents the number of units of a particular substance?
Coefficient
Subscript
Reactants
Products
What symbol would be used to show that a chemical substance is dissolved in water?
(aq)
(cr)
(l)
(g)
Which of the following elements is not diatomic?
Hydrogen
Oxygen
Fluorine
Carbon
In the following chemical equation, what are the correct subscripts to make it balanced?
___ KClO3 --> ___ KCl + ___ O2
2, 2, 3
2, 3, 2
3, 2, 2
1, 2, 2
When balancing a chemical equation, which of the following steps must occur first?
Add coefficients
Criss cross charges
Make R/P chart
What type of chemical reaction is shown below?
A + BC --> B + AC
Synthesis
Single Displacement
Double Displacement
Decomposition
What type of chemical reaction often produces a precipitate?
Single Displacement
Double Displacement
Synthesis
Decomposition
The temperature of a beaker drops by 2.2 degrees after two chemicals are mixed. What type of reaction occured?
Exothermic
Endothermic
Catalytic
Thermiodic
What is the correct balanced equation for the following reaction:
"Silver plus hydrogen nitrate yields..."
2Ag + 2HNO3 ---> 2AgNO3 + H2
Ag + HNO3 ---> AgNO3 + H
6Ag + 2H3N ---> 2Ag3N + 3H2
3Ag + H3N ---> Ag3N + 3H
Reaction A and Reaction B are both what type of chemical reaction?
Exothermic
Endothermic
Reaction A shows a chemical reaction with a relatively high activation energy. What type of substance could have been added in Reaction B?
Catalyst
Inhibitor
Precipitate
Coefficient
A chemist producing batches of aspirin is trying to increase his reaction speeds to meet a deadline. Which of the following strategies could he use?
Increase the temperature of his containers
Increase the volume of his containers
Lower the pressure inside his containers
Introduce an inhibitor to align reacting particles
Which has a greater number of atoms: a mole of gold, or a mole of hydrogen?
Gold
Hydrogen
Both have the same number
Not enough information
What is the molar mass of NaHCO3?
142.3 g/mol
52.0 g/mol
84.0 g/mol
83.6 g/mol
What is the molar mass of Magnesium?
24.3 g/mol
54.9 g/mol
40.1 g/mol
9.0 g/mol
Name the type of chemical reaction shown below:
BaCl2 + Na2SO4 ---> BaSO4 + 2NaCl
Double displacement
Single displacement
Decomposition
Synthesis
Which of the following options does not follow the Law of Conservation of Mass?
Mass of reactants must equal mass of products
Matter can't be created of destroyed, only rearranged
Same number and type of atoms must be present on both sides
All options summarize Law of Conservation of Mass
If 42.5 g of magnesium combines with oxygen, how many grams of magnesium oxide is produced?
70.5 grams
70.8 grams
141.0 grams
141.9 grams
Water decomposes to produce hydrogen and oxygen gasses. How much water was used to generate 85.0 grams of hydrogen gas?
534.7 grams
765.0 grams
772.3 grams
522.9 grams
