Mod C Unit

Quiz
•
Science
•
7th Grade
•
Hard
+1
Standards-aligned
Charles Martinez
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When paper is burned, the mass of the remaining ash is less than the mass of the original paper. Which statement best explains this result?
The ash has less volume than the paper.
Some of the matter is destroyed during the reaction.
The mass of the ash cannot be accurately determined.
Some of the products of the reaction were given off as a gas.
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ethane (C2H6) is one of many compounds that burns in oxygen to form carbon dioxide and water, as represented by the equation.
2C2H6 + 7O2 --> 4CO2 + 6H2O
Which substance is a product in this reaction?
Carbon (C)
Oxygen (O)
Water (H2O)
ethane (C2H6)
Tags
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solid magnesium, Mg, reacts with oxygen gas, O2, to for mthe solid magnesium oxide, MgO. Which is a balanced chemical equation for this reaction?
Mg + O --> MgO
Mg + O2 --> MgO2
Mg + 2O --> 2MgO
2Mg + O2 --> 2MgO
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When coal is burned, sulfur is released into the air, where it reacts with oxygen to product sulfur dioxide and sulfur trioxide. Which of these is true of this process?
The identity of each reactant remains the same
Sulfur dioxide and sulfur trioxide are the reactants in this change
The products have different chemical properties than those of the reactants
The products contain more sulfur atoms and fewer oxygen atoms than the reactants
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which number completes the balanced chemical equation showing the process of rusting?
4Fe + 3O2 --> __Fe2O3
1
2
4
12
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Based on the equations, which statement is correct?
MgO is a reactant in one of the chemical reactions.
Na3PO4 is a product in one of the chemical reactions.
A total of five oxygen atoms are involved in the first reaction.
H3PO4 shows that three atoms of oxygen are involved in the reaction
Tags
NGSS.MS-PS1-1
NGSS.MS-PS1-2
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of these statements is true?
Mass is lost when 2MG and O2 become 2MgO
Because Mg and O2 are both elements, no bonds were broken during the formation of MgO
The chemical properties of Pb(NO3)2 and NaI differ from the chemical properties of PbI2 and NaNO3
The chemical properties of NaOH and Na3PO4 are similar, and the chemical properties of H3PO4 and H2O are similar
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
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