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AP Chemistry Chapters 1-3 Vocabulary Flashcards | StudBud
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AP Chemistry Chapters 1-3 Vocabulary
AP Chemistry Chapters 1-3 Vocabulary
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#APCHEMISTRYVOCAB #APCHEM
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Answers
1
The method to convert from one system of units to another is called.
Unit conversions
Unit factor method
Dimensional Analysis
Systematic modeling
2
An acid is a molecule in which one or more H
-
ions are attached to an cation.
true
false
3
Matter is best defined as anything occupying space and having mass.
false
true
4
Ernest Rutherford got second place in a competition to attend Cambridge but got to attend _____
because the winner cheated
because the winner got married
because the winner was killed
because the winner declined the scholarship offer
5
Trailing zeros are at the left end of a number.
true
false
6
The bumpy surface of Post-It-Notes caused it to be/have
a limited number of binding contact points
sticky but not to sticky
like the surface of a gravel road
permanent adhesion
7
Means that a measurement has an equal probability of being either high or low
systematic error
random error
8
Refers to the degree of agreement among several measurements of the same quantity.
Accuracy
Precision
9
If the name of the anion ends in -ide, the acid is named with the prefix hydro
true
false
10
Group 2A elements are called the alkaline earth metals
true
false
11
Nonzero integers __________ count as significant figures.
Never
Always
12
The atomic number (Z) is the number of
neutrons
protons
electrons
protons and neutrons
13
Refers to the agreement of a particular value with the true value
Accuracy
Precision
14
Law of conservation of mass
total energy is not affected by change
total mass is not affected by chemical change
total mass is affected by chemical change
total mass is not affected by physical change
15
The proper conversion of temperature is ______.
Temperature (Kelvin) = Celsius + 273.15
Temperature (Celsius) = Kelvin - 273.15
Temperature (Cesium) = Kelvin - 273.15
Temperature (Kelvin) = Cesium + 273.15
16
Chromatography has two phases: stationary and modular
false
true
17
This is an image of
a ball and stick model
a space-filling model
18
Scientist observe nature and observes it in many different systems.
Hypothesis
Theory
Natural Law
Model
19
Elements that form only one cation do not need to be identified by a Roman Numberal
true
false
20
A pure substance is one with constant composition.
true
false
21
The alchemists symbol for silver looked like a moon.
false
true
22
Anyone know any jokes about sodium?
No jokes, all the good ones Argon
Got Sodium Hypobromite? NaBrO
Don't trust atoms, they make up everything.
Na!
23
Measures the resistance of an object to a change in its state of motion
VelocityWight
Mass
Gravity
Density
24
An error that occurs in the same direction each time.
systematic error
random error
25
the number equal to the number of ______ atoms in exactly ______ g of pure
12
C.
carbon 12
oxygen 16
Hydrogen 1
carbon 14
26
In isotopes, atoms have the same number of protons and neutrons.
false
true
27
Antoine Lavoisier
was executed because of his ties to tax collectors
wrote the first modern chemistry book.
was born in 1742
is often called the father of modern chemistry
28
How important are conversions from one unit to another?
Somewhat important, NASA lost a $5 Million Orbiter
Very important, NASA lost a $10 Million Orbiter
Very important, NASA lost a $125 Million Orbiter
Not very important, NASA lost a $1 Million Orbiter
29
Zeros between nonzero digits are called _____ in sig. figs.
captive
exclusive
placeholders
tweeners
30
Rules for Rounding of Sig. Figs.
Round first then round in final answer.
Round extra digits and then if 5 round up in final
Round extra digits and then if 5 round down in final
Carry the extra digits to the final results and then round.
31
Steel wool weighs more after it is burned than it did before is an example of what?
Law of conservation of mass.
Law of conservation of energy.
addition by subtraction.
Law of definite proportion.
32
Leading zeros do not count as sig. figs.
false
true
33
Dalton's Atomic Theory discussed
atoms of different atoms are different
chem reactions involve reorganization of the atoms
tiny particles called atoms
chem compounds are formed by unlike atoms
34
Group 1A compounds are called the Alkali metals
true
false
35
* or / of sig. figs. results use the greatest precision measurement.
false
true
36
Volume: 1 Liter is equivalent to
1dm3=(1000cm)3=10000000 cm3
1dm3=(10cm)3=1000 cm3
1dm3=(100cm)3=100000 cm3
1dm3
37
The mass number (A) is the number of
neutrons and electrons
neutrons
protons and neutrons
protons and electrons
38
Polyatomic ions are assigned special names that must be memorized to name the compounds
false
true
39
A given compound always contains exactly the same proportion of elements by mass.
Law of conservation of mass
Law of definite proportions
40
anions that contain an atom of a given element and different numbers of oxygen atoms are called
oxyanions
polyatomic ions
41
Exact numbers can be assumed to have a(n) ________ number of sig. figs.
infinte
nonzero
limited
finite
42
Significant figures allows for uncertainty of plus or minus one of the last number
True
False
43
a model is a set of tested _________
hypotheses
states
measurements
procedures
44
John Dalton began teaching at a Quaker school when he was
18
12
25
8
45
Correct SI units listed:
Mass (kg), Length(m), Amount of Substance(mol), Temp(K)
Mass (g), Length(m), Amount of Substance(mol), Temp(K)
Mass (g), Length(m), Amount of Substance(mol), Temp(C)
Mass (kg), Length(m), Amount of Substance(mol), Temp(C)
