
Chemistry Unit Review
Authored by Charles Martinez
Chemistry
6th Grade
NGSS covered

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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalton's theory states that
Atoms cannot be created, destroyed, or divided.
atoms can be combined, rearranged, or separated in chemical reactions
all matter is made of atoms
all of these
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rutherford concluded that
atoms were indivisible
electrons formed the nucleus
atoms were mostly empty space
atoms had no charged particles
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Boron has the atomic number 5 which means it has 5
protons in the nucleus
reactive nuclides
neutrons in the cloud
energy levels
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Atoms of the same element have the same
mass number
atomic number
number of neutrons
atomic mass
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
One mole of krypton has
6.02 x 1022 atoms
6.02 x 1023 atoms
5.02 x 1022 atoms
5.02 x 1023 atoms
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the molar mass of nitrogen is 14 g, how many moles are in 62 g of nitrogen?
4.4 moles
8.68 moles
48 moles
7.6 moles
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
N can combine with O to make NO or NO2. The ratio of masses of N that combine with a given mass of O is 1:2. This is
Dalton's atomic theory
law of conservation of mass
law of definite proportions
law of multiple proportions
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