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