Chemical Reactions Review
Authored by Samuel Stevens
Science
11th Grade
NGSS covered
Used 13+ times
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16 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a chemical equation, "dissolved in water" is represented by which of the following symbols?
(s)
(l)
(g)
(aq)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two students conduct several tests to determine the identity of an unknown metal. They noted that it was powdery white, conducted both heat and electricity, and had a density of 10.49 g/cm³. It did not react with water but, with nitric acid it released a gas. What evidence above supports a chemical change in this unknown?
A. It conducts heat.
B. It reacts with nitric acid to produce a gas.
C. It has a density of 10.49 g/cm³.
D. It is powdery white.
Tags
NGSS.MS-PS1-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms of oxygen are represented in 2Mg(SO₄)₂?
A. 2
B. 4
C. 8
D. 16
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A solid produced from two aqueous solutions in a chemical reaction is known as a(n) _______.
A. precipitate
B. oxide
C. salt
D. hydrocarbon
Tags
NGSS.MS-PS1-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Classify the following reaction: HCl(aq) + NaOH(aq) ⟶ NaCl(aq) + H₂O(l)
A. Double replacement
B. Single replacement
C. Combustion
D. Decomposition
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements about the reaction below is not true? N₂(g) + 3H₂(g) ⟶ 2NH₃(g) + energy
A. It is endothermic.
B. Overall, it releases energy.
C. It is in equilibrium.
D. It is reversible.
Tags
NGSS.HS-PS1-4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To balance a chemical equation, it may be necessary to change the substances’ _______.
A. subscripts
B. superscripts
C. coefficients
D. formulas
Tags
NGSS.HS-PS1-7
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