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WorksheetsGas Laws and Chemical Reactions
Total questions: 23
Worksheet time: 13mins
What type of changes the appearance change but the substance is the same.
Physical
Chemical
Identify the following process: We light a matchstick.
Physical change
Chemical change
Identify the following process: The food and the air react.
Physical change
Chemical change
The initial substances before occurring the chemical reaction are called...
Reactants
Products
The new substances after occurring the chemical reaction are called...
Reactants
Products
The mass conservation law says
During a chemical reaction, atoms are destroyed. The number of atoms don't remains constant throughout the reaction.
During a chemical reaction, atoms are created. The number of atoms remains constant throughout the reaction.
During a chemical reaction, atoms are neither created nor destroyed. The number of atoms remains constant throughout the reaction.
Which of these changes are chemical changes?
Cutting a paper.
Boiling water.
The oxidation of an apple.
Respiration.
The main difference between a physical and a chemical change is that...
in a chemical change the color changes but in a physical change the color never changes.
new substances are produced in a physical change but not in a chemical change.
in a chemical change gases are emitted.
new substances are produced in a chemical change but not in a physical change.
Which are the reactants in the following chemical reaction:
Methane reacts with oxygen to produce water and carbon dioxide.
Methane.
Water.
Oxygen.
Carbon dioxide.
New substances are produced in a chemical reaction because...
new atoms are created.
the atoms which form the reactants rearrange and join in a different way.
the atoms which form the reactants disappear.
Evaporation is...
endothermic and is a chemical reaction
exothermic and is a physical change
endothermic and is a physical change
Pressure is measured in...
L
K
Atm
Volume is measured in...
L
K
Atm
Temperature is measured in...
L
K
Atm
Charles´ Law
Boyle´s Law
Gay-Lussac´s Law
In Boyle´s Law the units to the State 1 are
L/K
Atm/K
Atm*L
In Charles´ Law the units to the State 1 are
L/K
Atm/K
Atm*L
Boyle´s Law
Gay-Lussac Law
Charles´ Law
In Gay Lussac´s Law the units to the State 1 are
L/K
Atm/K
Atm*L
Charles´ Law
Boyle´s Law
Gay Lussac´s Law
