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WorksheetsLaw of conservation of mass and Organelles review
Total questions: 14
Worksheet time: 11mins
Name
Class
Date
1.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
2.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
3.
Which of the models of a chemical reaction best represents the Law of Conservation of Mass?
a)
A
b)
B
c)
C
d)
D
4.
The Law of Conservation of matter states that the total amount of matter ______________ after it undergoes change.
a)
disappears
b)
stays the same
c)
weighs less
d)
explodes
5.
An oreo cookie weighs 20 grams. It gets crushed into crumbs for a recipe. How much do its crumbs weigh?
a)
15 grams
b)
25 grams
c)
20 grams
6.
When a chemical reaction occurs...
a)
New molecules and atoms are formed
b)
Molecules and atoms are rearranged
c)
Molecules and atoms disappear
d)
Molecules and atoms are destroyed
7.
where are the products in an equation?
a)
The products are on the right side of the equation
b)
The products are on the left side of the equation
8.
where are the reactants in an equation?
a)
The reactants are on the left side of an equation
b)
the reactants are on the right side of an equation
9.
Organelle in the cell that stores water, waste and food.
a)
Chloroplast
b)
Vacuole
c)
Ribosome
d)
Smooth ER
10.
Protective barrier that surrounds all cell types that controls what enters and leaves the cell.
a)
nuclear membrane
b)
cytoplasm
c)
Cell wall
d)
Cell membrane
11.
Organelle that makes proteins. They may be found floating in the cytoplasm or attached to the rough ER.
a)
ribosomes
b)
lysosomes
c)
Golgi comples
d)
nucleosome
12.
Organelle that modifies and packages proteins that will be exported (sent) out of the cell.
a)
ER
b)
Lysosome
c)
Golgi complex
d)
Ribosome
13.
The site of photosynthesis
a)
ribosome
b)
mitochondria
c)
chloroplast
d)
nucleus
14.
What are tiny organelles that convert glucose into ATP?
a)
Ribosomes
b)
Vesicles
c)
Cytoskeleton
d)
Mitochondria
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