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PASS Chem 2 Review
Test Description: Chemistry review
Instructions: Answer all questions to get your test result.
1) Which of the following is NOT metal?
A
Iron
B
Sulfur
C
Sodium
D
Calcium
2) Which of the following equations is balanced? (note the numbers behind the symbols should be subscripts)
A
2H + 2O --> 2 H2O
B
H2 + O2 --> H2O
C
2H2 + O2 --> 2 H2O
D
H + O --> H2O
3) What are the correct number of atoms for each element in this sample: 4H2O (The 2 behind the H should be a subscript)
A
2 Hydrogens, 2 Oxygens
B
4 Hydrogens, 2 Oxygens
C
4 Hydrogens, 4 Oxygens
D
8 Hydrogens, 4 Oxygens
4) Pure substances that are composed of two or more types of elements, can only be changed into simpler substances by chemical changes
A
mixtures
B
compounds
C
metals
D
molecules
5) The smallest part of a COMPOUND, made up of two or more elements
A
atoms
B
molecules
C
sodium
D
mixtures
6) Which of the following is a mixture?
A
carbon
B
water
C
salt and pepper
D
oxygen
7) What is the range of the pH scale?
A
7
B
0-14
C
1-12
D
6-8
8) Which of the following is NOT a characteristic of an acid?
A
reacts with bases
B
include dish detergent, cleaners
C
sour taste
D
0-6 on the pH scale
9) Which of the following is NOT a characteristic of a base?
A
feels slippery
B
8-14 on the pH scale
C
bitter taste
D
0-6 on the pH scale
10) When a substance is neither an acid or a base it is ____.
A
orange juice
B
lysol cleaner
C
neutral or pure water
D
cola
*select an answer for all questions
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