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Chemistry
Test Description: Periodic table, matter
Instructions: Answer all questions to get your test result.
1) The periodic table is arranged horizontally by what?
A
by the weight
B
left to right by number of neutrons
C
left to right by increasing atomic mass
D
left to right by increasing atomic number
2) Elements in the same group have similar
A
atomic number
B
everything
C
chemical properties/reactivity
D
atomic mass
3) how can you tell if 2 elements are chemically similar?
A
periods
B
you can´t
C
groups
D
atomic numbers
4) The law of conservation of mass states
A
That mass decreases during chemical reactions
B
That mass increases during chemical reactions
C
That mass can´t be created or destroyed; it remains the same
5) During the law of conservation of mass
A
reactants is less than products
B
reactants are more than products
C
Reactants are equal to the products.
6) This type of matter is made from the same type of atoms and cannot be broken down
A
mixtures
B
compounds
C
elements
7) When 2 elements combine chemically this is formed
A
compound
B
element
C
mixture
8) carbon, dioxide, Water, sugar and salt are all
A
mixtures
B
compounds
C
elements
9) oxygen, nitrogen and silver are all
A
elements
B
mixtures
C
compounds
10) Which of these are not a type of pure substance
A
elements
B
mixtures
C
compounds
11) An element is malleable, shiny and a good conductor of electricity. Which one is it most likely to be?
A
carbon
B
nitrogen
C
copper
D
oxygen
12) Which group is the most reactive metals?
A
group 1
B
group 13
C
group 18
D
group 17
13) Which group is the most reactive nonmetals
A
group 17
B
group 1
C
group 13
D
group 18
14) Which are the least reactive elements
A
noble gasses- group 18
B
group 17
C
group 1
D
group 13
15) What is the best way to remove salt from a mixture of salt water in a chemistry lab?
A
sifting out the salt
B
evaporate the water
C
filter out the salt
16) which of these is not a nonrenewable energy (Fossil fuel)
A
gas
B
coal
C
oil
D
biomass
17) What are benefits of fossil fuels
A
they are expensive
B
they are cheap and reliable
C
they cannot always be used
D
they are good for the environment
18) Which of these is not a negative of wind turbines is that
A
they hurt flying animals
B
They take up large space
C
They do not pollute the atmosphere
D
They are noisy
19) What gas is released from burning fossil fuels that leads to global warming?
A
hydrogen
B
carbon dioxide
C
oxygen
D
nitrogen
*select an answer for all questions
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