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- 1. Multiple Choice
In an isolated system, matter can neither be created or destroyed.
true
false
- 2. Multiple Choice
To the best of our knowledge, the universe is a closed system.
false
true
- 3. Multiple Choice
When we represent a chemical reaction in this way, it is called a ............................equation
hard
short
word
unbalanced
- 4. Fill in the Blank
In a word equation for a chemical reaction, the reactants are to the.....................of the arrow.
- 5. Fill in the Blank
In a word equation for a chemical reaction, the products are to the.......................of the arrow.
- 6. Multiple Choice
Name one of the reactants in this reaction.
vinegar
H2O
water
carbon dioxide
- 7. Multiple Choice
Name one of the products in this reaction
Baking Soda
Vinegar
Water
NaHCO3
- 8. Multiple Choice
Which Theory explains where the very first atoms are thought to have come from?
Cosmic Theory
Flat Earth Theory
Theory of evolution
Big Bang Theory
- 9. Multiple Choice
Energy released in a chemical reaction can be released as
heat
light
energised particles
all of the above
- 10. Multiple Choice
In a closed system, the mass of the reactants is equal to the mass of the products
false
true
- 11. Multiple Choice
In an open system the mass of the products may be more or less than the mass of the reactants
true
false
- 12. Multiple Choice
In the Photosynthesis reaction the products are
water and oxygen
water and sunlight
Glucose and oxygen
Glucose and Carbon Dioxide
- 13. Multiple Choice
In the Photosynthesis reaction, the reactants are
Glucose and Oxygen
Sunlight and Oxygen
Carbon Dioxide and Glucose
Carbon Dioxide and water (with Sunlight)
- Answer choicesTagsAnswer choicesTags