WorksheetsChemical and Physical Changes and The Code
Total questions: 17
Worksheet time: 11mins
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
Example: H2
Ex: 2H2 + O2 --> 2H2O
What is a chemical equation?
Describes the number of elements in a compound.
One or two letters that represent the elements on the periodic table.
The number to the lower right of an element that shows the number of atoms bonded.
A written description of a chemical reaction.
Number eight (8) is indicating ____ of the equation.
solid
liquid
gas
aqueous
When matter changes size, shape or state of matter it is called...
a physical change
a chemical change
a molecule
When two or more different substances are mixed, a new substance with different properties may be formed.
chemical change
physical change
volume
Ripping a piece of paper is an example of a
Chemical Change
Physical Change
Mixing vinegar and baking soda is an example of a
Chemical Change
Physical Change
Cutting a piece of wood is an example of a
Chemical Change
Physical Change
Burning paper is an example of a
Chemical Change
Physical Change
Chopping vegetables is an example of a
Chemical Change
Physical Change
Baking a cake is an example of a
Chemical Change
Physical Change
Which of the following is NOT a sign of a chemical change taking place?
Release of gas (bubbles)
Giving off or taking in heat
Change in color
Changing states of matter
Melting ice is an example of a
Chemical Change
Physical Change
