

Chemical Concepts and Reactions
Interactive Video
•
Chemistry, Biology, Science
•
9th - 10th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is the correct symbol for sodium?
K
Cl
C
Na
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the chemical formula for sodium bicarbonate?
NaOH
CO2
H2O2
NaHCO3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes an ion?
A fundamental substance that cannot be broken down
An atom or molecule with a positive or negative charge
A molecule with no charge
A subatomic particle with a positive charge
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary factor that affects solubility?
Volume
Temperature
Density
Pressure
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What should you do first when a chemical spill occurs?
Add water to the spill
Stop additional spilling if possible
Ignore the spill
Call emergency services
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between flammable and combustible substances?
Combustible substances do not burn
Flammable substances catch fire easily at normal temperatures
Combustible substances catch fire easily at normal temperatures
Flammable substances require higher temperatures to ignite
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of reaction absorbs energy from the environment?
Neutralization
Endothermic
Exothermic
Combustion
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