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Mixing Matter
Test Description: Science Test
Instructions: Answer all questions to get your test result.
1) What are all things made of?
A
atoms
B
neither
C
both
D
matter
2) What do pure iron and pure gold have in common?
A
They both only exist as solids.
B
They have the same number of electrons and protons.
C
They are each made up of a single element.
D
They are both chemical compounds.
3) What are the three kinds of particles inside an atom?
A
helium, carbon, and hydrogen
B
core, mantle, and crust
C
protons, neutrons, and electrons
D
molecules, compounds, and elements
4) Scientists identify an ammonia molecule as NH₃. How many hydrogen atoms are there in one molecule of ammonia?
A
three
B
There is not enough information to determine the answer.
C
four
D
one
5) How would scientists identify a molecule that contains two hydrogen (H) atoms, one sulfur (S) atom, and four oxygen (O) atoms?
A
H₂SO₄
B
HHSOOOO
C
HS₄O₂
D
Hh₂SOooo₄
6) Molecule is to atoms as jigsaw puzzle is to __________.
A
the puzzle's pieces
B
the picture shown on the puzzle
C
the puzzle's box
D
the table upon which the puzzle is assembled
7) When moving from a solid to a gas, the particles move about at a __________ pace.
A
slower
B
faster
8) Which of these is an example of a physical change?
A
spoiled food smelling bad in a trash can
B
an apple turning brown when exposed to air too long
C
fireworks exploding in bright flashes of color
D
large rocks getting crushed to be used as gravel
9) Which of these is an example of a chemical change?
A
rust forming on metal after it gets wet
B
raisins and peanuts being mixed in a bowl
C
pouring chocolate syrup over frozen strawberries
D
glass bottles breaking when dropped
10) After baking a cake, it is hard to turn the cake back into its original ingredients. Why is this so?
A
The cake is made up of molecules.
B
Heat makes it impossible to separate all materials once they are combined.
C
The original ingredients no longer exist within the cake.
D
The cake has gone through chemical changes.
11) The more ________ an atom has, the more it will weigh.
A
nuclei
B
electrons
C
electrons and protons
D
protons and neutrons
12) What kind of chemical compound could be made just by combining carbon (C) and oxygen (O) atoms?
A
Calcium carbonate (CaCO₃)
B
Water (H₂O)
C
Ozone (O₃)
D
Carbon dioxide (CO₂)
13) You can use a graduated cylinder to find the _____ of a solid by measuring the amount the water goes up.
A
compound
B
density
C
volume
D
matter
14) The number of ____ in an atom tells us what element it is.
A
nucleus
B
neutrons
C
protons
D
electrons
15) All elements have ____ properties
A
similar
B
different
16) Where are the electrons, protons, and neutrons in relation to the nucleus?
A
The protons and neutrons are in the nucleus, while the electrons move around it.
B
The protons, neutrons, and electrons are in the nucleus.
C
The electrons are in the nucleus, while the protons and neutrons move around it.
17) Could water be an element if it can be broken down into two simpler gases?
A
yes
B
no
*select an answer for all questions
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