Chemical Elements and Properties
Interactive Video
•
Chemistry
•
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 a physical property of matter?
Reactivity with acid
Color
Ability to rust
Flammability
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to iron when it reacts with water and oxygen?
It melts
It forms a new substance called rust
It evaporates
It remains unchanged
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can mixtures be described?
They are chemically combined
They can be separated into original substances
They have a fixed ratio of components
They are always homogeneous
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a pure substance that consists of only one kind of atom called?
Element
Mixture
Compound
Solution
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many naturally occurring elements are there approximately?
120
95
75
50
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the chemical formula for water?
O2H
H2O
HO2
H2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the first letter in a chemical formula?
It is always a symbol
It is always capitalized
It is always lowercase
It is always a number
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