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- 1. Multiple Choice
What state symbol do we use when something is dissolved in water?
(l)
(aq)
(s)
(g)
- 2. Multiple Choice
Which correctly shows the molecule we breathe out?
CO2(l)
CO2(aq)
CO2(g)
CO2(s)
- 3. Multiple Choice
What do we add to chemical equations to show what STATE the products and reactants are in?
State symbols
Numbers
Arrows
Pictures
- 4. Fill in the Blank
When water MELTS, it changes state from SOLID (s) to...
- 5. Multiple Choice
What is a precipitate?
A solid formed in a liquid
A liquid
A gas
A gas formed in a liquid
- 6. Multiple Choice
What happens to salt when it is stirred in hot water?
it solidifies
it disrupts
it melts
it dissolves
- 7. Multiple ChoiceEvidence of a chemical reactions is anything that shows -a new substance has formeda solid dissolved in a liquidinteraction between 2 gasesa change in the state of matter
- 8. Multiple ChoiceOne of the signs of a chemical reaction taking place is:Bubbles are producedReactants are not combiningProducts are not formingColor is not changing
- 9. Multiple ChoiceWhich of the following describes a precipitate?a liquid forms when a block of metal is heateda solid forms when one liquid is poured into anothera gas forms when a solid is placed in a liquidbubbles form when an acid is poured on a rock
- 10. Multiple ChoiceWhich of the following is an example that includes evidence of a chemical reaction?A sample of zinc is placed in water and it settles to the bottomA solid block of ice is heated and it completely melts into a liquid.Sugar that is burned gives off an odor and turns brown and then black.A tomato is placed into a blender and chopped up into smaller pieces.
- 11. Multiple Choice
What is the name of this compound:
NaCl?
Na = sodium
Cl = chlorine
chloride sodium
sodium chlorine
sodium chloride
chlorine sodiumide
- 12. Fill in the Blank
What is the compound formed when COPPER reacts with OXYGEN?
- 13. Multiple Choice
Which of the following is the correct chemical formula for iron sulfide?
fes
FES
FeS
fEs
- 14. Multiple Choice
What compound is formed when aluminium reacts with iodine?
Aluminium iodide
Iodine aluminiumide
Iodine aluminium
Aluminium iodinide
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