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WorksheetsIntroduction to Chemistry
Total questions: 15
Worksheet time: 8mins
What is classified as "matter"?
Wood
Water
Air
All are matter.
Which state of matter has no definite shape or volume?
Gas
Liquid
Solid
"Carbon" is classified as................
Homogeneous mixture
Heterogeneous mixture
Compound
Element
"Table salt" is classified as................
Heterogeneous mixture
Compound
Homogeneous mixture
Element
Which one describes the physical property of sodium?
Sodium's surface turns black when first exposed to air.
Sodium is a solid at 25oC and changes to a liquid when heated to 98oC.
When placed in water, sodium sizzles and a gas is formed.
When placed in contact with chlorine, sodium forms a compound that melts at 801oC.
What is the smallest form of a chemical element?
nucleus
molecule
atom
electron
What is subatomic particle with a positive charge?
nucleus
neutron
electron
proton
What is subatomic particle with a negative charge?
proton
neutron
electron
nucleus
What is the molecule that has gained or lost electrons?
atom
molecule
nucleus
ion
What is the amount of matter in an object?
Volume
Density
Mass
Length
What is the amount of mass per volume?
Length
Volume
Mass
Density
What is "SI unit" for temperature?
Celcius
Kelvin
Fahrenheit
All are correct.
What is an element in Group 6A?
Carbon (C)
Oxygen (O)
Fluorine (F)
Calcium (Ca)
What is an element in Group 2A?
Lithium (Li)
Sulfur (S)
Calcium (Ca)
Boron (B)
What is the scientific notation of "0.00000772"?
7.72 x 10-6
0.772 x 10-5
7.72 x 106
0.772 x 105
