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- 1. Multiple Choice
Atoms and molecules are all around us and so are chemical reactions.
True
False
- 2. Multiple Choice
A ____________ Is the process of breaking chemical bonds in one or more substances, and the reforming on newborns to create new substances.
physical change
chemical change
energy
law of conservation of mass
- 3. Multiple Choice
An expression of a chemical reaction using chemical formulas and symbols.
algebraic equation
order of operation
chemical equation
formula
- 4. Multiple Choice
All chemical reactions involve energy.
True
False
- 5. Multiple Choice
A process by which plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water to make glucose and oxygen as a byproduct.
activation energy
chemosynthesis
equilibrium
photosynthesis
- 6. Multiple Choice
Describes a chemical reaction that uses more energy than it releases.
Energy used > Energy released
activation energy
exothermic
endothermic
none of the above
- 7. Multiple Choice
Describes a chemical reaction that releases more energy than it uses.
Energy released > Energy used
activation energy
exothermic
endothermic
equilibrium
- 8. Multiple Choice
The left side of the equation are the
reactants: carbon dioxide + glucose + Energy
products: glucose + oxygen
reactants: carbon dioxide + water + Energy
products: Energy + glucose + oxygen
- 9. Multiple Choice
All life on earth depends on energy from
animals
water
sun
chemical
- 10. Multiple Choice
A molecule added to a chemical reaction that increases the reaction rate without getting used up in the process.
kinetic molecular
catalyst
reaction rate
inhibitor
- 11. Multiple Choice
A reaction in which the number of protons and or neutrons is altered in one or more atoms.
chemical equilibrium
chemical reaction
nuclear reaction
half-life
- 12. Multiple Choice
__________ - is the process of combining the nuclei of lighter atoms to make heavier atoms.
This process is occurring all the time in a very familiar object - the Sun.
nucleus
nuclear fusion
nuclear fission
half-life
- 13. Multiple Choice
A nuclear reaction in which the nuclei of heavier atoms are split to make lighter atoms. A
nuclear reaction
nuclear fusion
nuclear fission
half-life
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