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Reaction Review (Spicy)
Test Description: Answer the following questions to review for the test.
Instructions: Answer all questions to get your test result.
1) You mix solution A (70 g) with solution B. When they are mixed, a chemical reaction occurs and you end with a total mass of 190 g). What should the mass of solution B be?
A
90 grams
B
70 grams
C
190 grams
D
120 grams
2) You did an experiment where you combined a few chemicals and experienced an endothermic reaction. What happened?
A
Mass was gained
B
Mass was lost
C
Heat/energy was absorbed
D
Heat/energy was released
3) What is the definition of “products” in a chemical reaction?
A
When a reaction releases heat
B
The result of mixing chemicals in a chemical reaction
C
The chemicals that are added to a chemical reaction
D
When a reaction absorbs heat
4) In chemical reactions atoms are rearranged. John Daltons proposed that the number of each type of atom stays the same. Which idea did Dalton's statement help explain?
A
The arrangement of protons, neutrons, and electrons in atoms
B
The arrangements of atoms in the Periodic Table of the Elements
C
The law of conservation of matter
D
The law of conservation of energy
5) Which type of reactions absorbs heat from the surroundings?
A
Exothermic
B
Endothermic
C
Combustion
D
Neutralization
6) A block of iron will react with acid to produce hydrogen gas. Which of these describes what would happen if iron powered were used instead of a block of iron?
A
The reaction would no longer take place
B
The reaction would happen at the same speed
C
The speed of the reaction would increase
D
The speed of the reaction would decrease
7) Which of these best describes why the pH scale is used to describe how acidic or basic a solution is?
A
The concentration of hydrogen ions is very large
B
The concentration of hydrogen ions is very small
C
The concentrations of hydrogen ions for different substances can be very different
D
The concentrations of hydrogen ions for different substances are very similar
8) Which of these is measured using the pH scale?
A
The number of hydrogen ions
B
The number of hydroxide ions
C
The concentration of hydrogen ions
D
The concentration of hydroxide ions
9) You combine vinegar, that has a pH of 2, with bleach, that has a pH of 14. The mixture will be a
A
Strong Base
B
Weak Base
C
Strong Acid
D
Weak Acid
10) Which of these does not stay the same during a chemical reaction?
A
The arrangement of the atoms
B
The total number of each type of atom
C
The mass of each type of atom
D
The total mass of the atoms
*select an answer for all questions
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