How many HCl molecules do you need to balance the chemical equation below? Mg + __HCl → MgCl2 + H2

Chemical Processes and Equations

Quiz
•
Other
•
7th Grade
•
Easy
Maya Allouh
Used 3+ times
FREE Resource
43 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2
12
5
1
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
The synthesis reaction can also be named by____________. (Select all that apply).
Decomposition
Buring
Combination
Composition
Replacement
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
A reaction that always starts with a Hydrocarbon that reacts with oxygen and produces carbon dioxide and water.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the reaction below, water is a ________________.
Reactant
Product
A and B are correct
None of the above.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Evidence of a chemical reaction is anything that shows ____________.
a new substance has formed
a solid dissolved in a liquid
interaction between 2 gases
a change in the state of matter
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Decomposition is the opposite reaction of ______________.
Synthesis
Combustion
Single replacement
Double replacement
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Choose the correct answer: The number to the lower side of an element is a __________.
Subscript
Superscript
Coefficient
B and C are correct
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