The chemical equation for the reaction that occurs when propane gas burns is shown below. What are the products of this reaction?
C3H8 + 5O2 → 3CO2 + 4H2O
G9 - exam
Quiz
•
Chemistry
•
9th Grade
•
Hard
magdy khalaf
FREE Resource
50 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The chemical equation for the reaction that occurs when propane gas burns is shown below. What are the products of this reaction?
C3H8 + 5O2 → 3CO2 + 4H2O
C3H8 and 5O2
3CO2 and 4H2O
4H2O and C3H8
5O2 and 3CO2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which physical property would be most useful for separating the substances ina saltwater solution?
mass
boiling point
magnetism
density
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A change in ......................................is a sign that a chemical change might have occurred.
size
shape
smell
state
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
............................. matter in which substances are evenly mixed but not chemically bonded
compound
solution
heterogenous mixture
element
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
..........................matter containing atoms of two or more elements chemically bonded together.
element
compound
homogenous mixture
heterogenous mixture
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which activity could be a sign that a chemical change has occurred?
a solid melts
a substance dissolves
a liquid changes color
an object change shape
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is NOT one of the main factors that determine the state of matter?
particle size
particle motion
particle forces
particle energy
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