
Intro to Chemistry Practice
Authored by Jeffrey Hurm
Science
8th Grade
NGSS covered
Used 1+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The reaction Cl2(g) + 2KBr(aq) -> 2KCl(aq) + Br2(l) is a(n)
synthesis reaction
decomposition reaction
single-replacement reaction
double-replacement reaction
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The reaction Pb(NO3)2(aq) + 2KI(aq) -> PbI2(s) + 2KNO3(aq) is a
synthesis reaction
combustion reaction
single-replacement reaction
double-replacement reaction
Tags
NGSS.MS-PS1-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statement describes a chemical property of aluminum?
Aluminum is malleable
Aluminum has a high density
Aluminum reacts with sulfuric acid
Aluminum conducts an electric current
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The formation of water from oxygen and hydrogen can be described in the following word equation:
oxygen gas+ hydrogen gas → liquid water
product
reactant
waste
only a compound
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When investigating a chemical reaction, one would expect the products to have
The same properties as the reactants have separately
a mixture of the properties of the reactants
different properties than the reactants have separately
the same properties as only one of the reactants
Tags
NGSS.MS-PS1-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The data from an investigation on the reaction of sodium and chlorine is shown in the table above. The data in the table gives evidence to support the fact that
compounds have different properties than the elements that make them up
crystals are formed whenever solids react with gases
once a compound is formed it cannot be chemically separated into the elements from which it is made.
chlorine has a higher melting point than sodium
Tags
NGSS.MS-PS1-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The chemical word equation for the process of photosynthesis is:carbon dioxide + water → glucose + oxygen
The reactant(s) for the process of photosynthesis
are glucose and oxygen
is glucose only
is water only
are water and carbon dioxide
Tags
NGSS.MS-LS1-6
NGSS.MS-LS2-3
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