
Physical Science Ch. 7
Authored by Sherry Kakaley
Science
6th - 9th Grade
NGSS covered
Used 72+ times

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19 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The substances that are formed as a result of a chemical reaction are called
coefficients.
reactants.
products.
elements.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hydrochloric acid, HCl, is added to solid NaOH. After the reaction is complete, NaCl dissolved in water remains. What are the products of this chemical reaction?
NaOH and HCl
NaOH and H2O
HCl and NaCl
NaCl and H2O
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Select more than one answer: What does the arrow mean in a chemical equation?
forms
produces
conserves
yields
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is a balanced chemical equation for the synthesis of H2O from H2 and O2?
H2 + O2 --> H2O
2H2 + O2 --> H2O
2H2 + O2 --> 2H2O
H2 + O2 --> 2H2O
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The coefficients in a balanced chemical equation always can express the ratio of _____ of reactants and products.
Moles
Volume
Atoms
Mass
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When magnesium carbonate, MgCO2, reacts with nitric acid, HNO3, magnesium nitrate and carbonic acid form. Carbonic acid then breaks down into water and carbon dioxide. Which two types of reactions take place in this process?
synthesis and decomposition
single replacement and combustion
double replacement and decomposition
double replacement and synthesis
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT always true about a synthesis reaction?
One product is formed.
There is only one reactant.
General formula is A + B --> C.
A reactant might be a compound or it might be an element.
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