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WorksheetsChemical and chemical changes
Total questions: 25
Worksheet time: 12mins
which of these example is a physical change?
is the picture chemical or physical
chemical
physical
Identify the change shown in the picture.
Irreversible physical change
Irreversible chemical change
reversible physical change
reversible chemical change
What does the picture represent ?
physical change
chemical change
The difference between a Physical change and a Chemical change is…
Physical change is only a change to the outside appearance.
Chemical change is when matter is changed into something new.
Atoms are rearranged in chemical changes & not in physical.
All are correct.
Identify what type of change happening in the picture below...
Chemical Change
Physical Change
Endothermic Reaction
Exothermic Reaction
If the chemical properties of a substance remain unchanged & the appearance or shape of an substance changes it is a...
Chemical Change
Physical Change
Both a physical and chemical change.
Neither a physical or chemical change.
During Chemical Reactions, the new substances created are called?
Precipitate
Corrosion
Reactants
Products
During Chemical Reactions, the substances that are used are called?
Precipitate
Corrosion
Reactants
Products
What is the chemical formula of Magnesium chloride?
MgCl
MgCl2
MgC
MgC2
What is the formula of nitric acid?
H2SO4
HNO3
HCl
hno3
A symbol represents ____________
one molecule of an element.
one ion of an element.
one atom of an element.
atomic number of an element.
The correct symbol for copper is ______.
C
Cl
Cr
Cu
The valency of nitrogen is ____________.
3
2
4
1
Symbol of Sodium is _____
S
Sd
Na
Which type of change is most often easily reversed?
Chemical
Physical
Both a physical and chemical change.
Neither a physical or chemical change.
Which of the following is an example of a physical change?
A glass falling and shattering on the floor.
Baking a birthday cake.
Burning a piece of paper.
Baking soda and vinegar mixing together.
Pure Copper Sulphate Crystals can be obtained by ________.
Centrifugation
Distillation
Crystallisation
Filtration
