
UNIT 5 REVIEW
Presentation
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium
Jorge Bazo
Used 4+ times
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0 Slides • 10 Questions
1
Multiple Choice
In a chemical reaction atoms are...
destroyed
created
rearrenged
exploded
2
Multiple Choice
What clues indicate that a chemical reaction is taken place?
-Enrergy change
-Change in shape
-Precipitate formation
-Noise creation
-Change of flavour
-Energy change
-Colour change
-Gas formation
3
Fill in the Blanks
The substances that take place in a chemical reaction are called...
Type answer...
4
Multiple Choice
5
Multiple Choice
What three items are needed to make a fire?
-Air
-Wood
-Light
-Heat
-Fuel
-Nitrogen
-Wood
-Fuel
-Oxygen
-Oxygen
-Heat
-Fuel
6
Multiple Choice
Fire produces _____ that goes into the air, and _____ that are the remains of the fuel.
air , ash
smoke, ash
ash, smoke
smoke, air
7
Multiple Choice
Which substance produces oxidation?
Combustion
Nitrogen
Oxygen
Fermetation
8
Multiple Choice
What´s rust?
Is a type of yogourt
Is a green substance that appears in wood
Is a reddish substance that appears in metals
Is a type of bread
9
Multiple Choice
Which of these products are made through fermetation?
Cheese, bananas and yogourt
Rice, pizza and pasta
Milk, bread and spinach
Wine, yogourt and cheese
10
Multiple Choice
Fungi is used to ferment _____ and bacteria to ferment_____
alcohol, milk
milk, yogourt
alcohol, lactic acid
juice, aquarius
In a chemical reaction atoms are...
destroyed
created
rearrenged
exploded
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