Mid-Unit 3 Test Review- Chemical Reactions

Quiz
•
Science
•
9th - 12th Grade
•
Medium
Standards-aligned
Kristen Hamblen
Used 2+ times
FREE Resource
8 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the law of conservation of mass, which statement is true?
Mass can be created by chemical reactions.
The mass of the products in a chemical reaction do not have to equal the mass of the reactants.
Mass can neither be created nor destroyed.
Mass can only be destroyed by physical transformations.
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following chemical equations proves that the law of conservation of mass is in effect?
Mg2 + LiBr ---> LiMg + Br
2KCl + F2 ---> 2KF + Cl2
Na +O2 ---> Na2O
H20 ---> H2 + O2
Tags
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the following synthesis reaction what coefficient would need to be added in front of the water molecule to make it balanced?
NH4NO3 -----> N2O + H2O
None. It is already balanced.
1
2
3
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Decomposition reactions are similar to synthesis (combination) reactant because they are opposite of one another.
True
False
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the following equation, which of the following element(s)/molecule(s) is/are not balanced?
Cu + AgNO3 ----> Cu(NO3)2 + Ag
Cu, NO3
NO3
It is balanced
Cu, NO3, and Ag
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Using the reactivity series as your guide would the following reaction for water and copper take place?
H2O + Cu --->
Yes a reaction occurs.
There will NOT be a reaction.
Tags
NGSS.MS-PS1-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Balance the following equation, then select which statement is correct.
AgNO3 + K2SO4 ---> Ag2SO4 + KNO3
The equation is balanced.
To balance you must add a subscript of 2 to both the Ag and the K.
To balance the equation, you must add a coefficient of 2 to the AgNO3 molecule AND a 2 to the KNO3 on the products side.
To balance the equation, you must add a coefficient of 2 to the KNO3 molecule.
Tags
NGSS.MS-PS1-5
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Looking at the equation below AND your guide for if halogens will react , would the following single-displacement reaction occur?
Cl2 + MgI2 ---> I2 + MgCl2
TRUE! Yes it will occur.
FALSE. This reaction will NOT occur.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
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