Physical and Chemical Change Worksheet Classify the following as a physical or a chemical change and state "Why?" you gave that answer. 1. the rusting of an iron nail Phusical CQualitative)-since the colar change 2. the toasting of bread ChemicalLsince heat 3. the evaporation of water from a lake appled was
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
PLS ANSWER THE FOLLOWING QUESTIONS
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Energy
Physical and Chemical Change Worksheet
Classify the following as a physical or a chemical change and state "Why?"
you gave that answer.
1. the rusting of an iron nail
Physical
2. the toasting of bread
Chemic
(Qualitative)-Since the colar change
Since
heat
was
as
3. the evaporation of water from a lake
ysical (Qualitative) -since the state changed
Pभनेटीर
4. the formation of clouds
5. the tarnishing of silver
6. the flashing of an electronic flash in a camera
7. the baking of a cake
8. the frying of an egg
9. a cigarette burning
Chemic
10.the crushing of stones
Physicul
11.the melting of ice cream
Physical CQunlitative)-since Its state change d
12.the foaming of pop when it is poured
was
Qualitative) -Since its sloepe changed
13.the boiling of water
14.the cutting of wood
15.the burning of magnesium
16.the condensation of water on a mirror
17.wet clothes drying
18.the tearing of paper into little pieces
19.the breaking of glass
20.the sunburning of skin"
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