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WorksheetsCh 1 and 2 review A
Total questions: 19
Worksheet time: 47mins
The image shows the periodic grid of potassium. How many electrons are found in the potassium atom?
19
20
39
40
What charge does an atom have when it GAINS electrons?
Positive
Negative
Neutral
Which statement correctly describes an electron in an atom?
Electrons stay inside the nucleus and carry a neutral charge.
Electrons circle the nucleus and have a positive charge.
Electrons move around the nucleus and have a negative charge.
Electrons stay inside the nucleus and have a negative charge.
What is the picture displayed?
atom
element
compound
Molar Mass is measured in....
amu
g/mol
g
cats
What is the molar mass of C3H8 ?
32 g/mol
44.033 g/mol
13.011 g/mol
44.033 g
1 mole of Titanium (Ti) has a mass of ______?
47.867 g
22 g
25.667 g
4 g
1 mole of NaOCl contains _______ molecules?
7.44⋅101 molecules
74.44 molecules
6.022⋅1023 molecules
6.022 molecules
Occurs when one or more substances are changes into new substances with different properties; cannot be undone by physical means
Chemical Symbol
Chemical Change
Insulator
Mixture
6 kg = _____ g
6
6000
600
.006
I would measure this bus in
centimeters
milimeters
kilometers
meters
The number, 351 000, can be written in scientific notation as...
3.51 x 106
3.51 x 10-6
3.51 x 105
3.51 x 10-5
The number, 0.000 000 076, can be written in scientific notation as...
76 x 10-8
7.6 x 10-8
7.6 x 108
76 x 108
Convert 0.825 m to mm.
825 mm
82.5 mm
0.825 mm
8.25 x 10-1 mm
