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What is Chemistry?
What is Chemistry?
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Chapters one and two of AP chemistry
Flashcards
16 cards
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Practice quiz
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Questions
16
Answers
1
What is chemistry?
Blowing stuff up
The study of the properties and composition of matter
The study of the makeup of elements and how they interact
The study of chemicals
2
What is the chemical formula for the Oxalate ion?
C2O42-
HC2O4-
C3O5-
C6O143-
3
An isotope of Iodine whose atoms have 78 Neutrons is represented as:
C
B
D
A
4
Elements combine in fixed proportions to form ___.
Mixtures
Crystals
Compounds
Solutions
5
What are the three main components of the scientific method?
Observation, Data, Scientific Law
Observation, Data, Conclusion
Question, Hypothesis, Scientific Law
Data, Experiment, Conclusion
6
What is the chemical formula for Nitrite?
NO3-
N2
NO2-
HNO2
7
What did Rutherford conclude about the structure of an atom?
An atom carries a positive charge
An atom contains a small, dense, positively charged center
Electrons make up the center of an atom
An atom is indivisible
8
The amount of matter in a substance is its ___.
Weight
Volume
Density
Mass
9
What is an Element?
a substance that only contains one type of molecule
The smallest form of a substance
A substance that cannot be decomposed by a chemical reaction
the smallest form of matter
10
How many significant figures does 0.007 kg have?
4
3
2
1
11
Which of the following compounds uses the stock system?
Fe2(CO3)
MgO
H2SO4
Na2CO3
12
Who is this:
Bohr
Dalton
Avagadro
Democritus
13
If we use the unit g() for mass and (cm
3
) for volume, then the units of density will be ___.
cm3
gcm3
g
g/cm3
14
4.27 degrees F = ___ K?
305.42 K
248.68 K
331.37 K
243.37 K
15
The following is true by what law?
Law of Multiple Proportions
Daltons Atomic Theory
Law of Conservation of Mass
Law of Definite Properties
16
Acetone has a density of 0.791 g/mL. What is the volume of 10 g of acetone?
7.91 g/mL
12.6 g/mL
21.6 g/mL
12.6 g/L
