
Science
9th Grade
NGSS covered
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7 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which sample would would have the MOST atoms?
1 mole of Li
1 mole of Au
1 mole of Si
None, all are equal
2.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Calculate:
9.4 moles of B2(Cr2O7)3 = ____ grams B2(Cr2O7)3
6.41 x 1022g
5.67x1024 g
49.11 g
4,339.23 g
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
30 sec • 3 pts
Calculate:
100 grams V2(CO3)3 = ____ F.U. V2(CO3)3
2.1 x 1023 g
V2(CO3)3
3.7x1023 g
V2(CO3)3
2.1 x 1023 F.U.
V2(CO3)3
3.7x1023 molecules V2(CO3)3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which BEST describes what the unit of mole can be used for?
To measure the amount of grams in a substance
To measure the amount of particles or mass in a substance
To measure the amount of energy in a substance
To measure the amount of ions in a substance
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A mole of methane gas (CH4) contains
6.02 x 1023 _____.
6.
MULTIPLE SELECT QUESTION
3 mins • 2 pts
Select all that apply.
Which of the following is equivalent to a mole (1 mole)?
1 mole of Scandium
72.6 grams of Germanium
6.02x1026
formula units of LiBr
6.02x1023 molecules of CO2
7.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
Calculate:
2.85 x 1018 atoms Fe = ____ mol Fe
4.73 x 10-6 moles Fe
172 moles Fe
4.73 x 106 moles Fe
1.72 x 10-6 moles Fe
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