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Ch. 2 Test
Test Description: Chem
Instructions: Answer all questions to get your test result.
1) Which atoms make up water?
A
CO2
B
O2
C
H2O
D
NaCl
2) What is the simplest version of an element?
A
electron
B
atom
C
proton
D
nutron
3) Solutions that have a pH less than 7 are
A
Polar
B
Basic
C
Made of Water
D
Acidic
4) What are the 3 subatomic particles?
A
Proton, Neutron, Electron
B
Proton, Neutron, Atom
C
Atomic, Neutron, Electron
D
Proton, Ion, Electron
5) Water molecules are polar,where the oxygen is slightly ____ and the hydrogens are slightly ____
A
negative; positive
B
positive,neutral
C
positive,negative
D
negative, neutral
6) A ______________ bond occurs when atoms TRANSFER electrons.
A
Ionic
B
Hydrogen
C
Covalent
7) Solutions with a pH greater than 7 are ____________
A
Polar
B
Basic
C
Acidic
D
Neutral
8) What are atoms of the SAME element w/ the same # of protons and a DIFFERENT number of neutrons?
A
Isotope
B
Polar
C
Neutral
D
Ion
9) Water’s _________ allows it to dissolve compounds such as table salt.
A
Positive
B
Polarity
C
Negitivity
D
Neutrality
10) A ______________ bond occurs when atoms SHARE electrons.
A
Ionic
B
Polar
C
Covalent
D
Hydrogen
*select an answer for all questions
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