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CHM 130 Module 1 Review Flashcards | StudBud
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CHM 130 Module 1 Review
CHM 130 Module 1 Review
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VERA CLASS
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
Chemistry is the study of...
Matter & its properties
Gases & their smells
Elements & their place on the Periodic Table
Chemicals & their uses
2
What is the basic metric unit of mass?
liter
meter
gram
mile
3
How many moles of Oxygen are in 2 moles of NO
2
2
1
cannot answer with the information provided
4
4
Which of these numbers are not written in correct scientific notation?
2.1 x 102
0.1 x 103
3.2 x 103
5 x 102
5
Matter is another word for all substances that make up our world.
True
False
6
The Atom
is represented by Avocado's number
is the smallest possible piece of an element
Can be observed with the "naked eye"
contain megatrons & voltrons
7
1 kilometer is equivalent to
1000 meters
10 meters
10,000 meters
100 meters
8
Density is ...
Mass x Volume
Fluid
Constant
Mass/Volume
9
Convert 1.5 moles of H
2
O into grams
27 g
28 g
26 g
none of the answers are correct
10
Which of the following is NOT a physical change?
sugar dissolving into water
heating sugar to form caramel
water boiling to form water vapor
paper cut into tiny pieces
11
What is the metric unit of time?
minute
millisecond
second
hour
12
Isotopes have the same number of protons but different numbers of neutrons
False
True
13
The atomic size of an atom...
increases going across a group
decreases going down a group
increases going down a group
does not change going down a group
14
The Atomic Mass is
The exact circumference of an atom
the number of protons + electrons
the number on the periodic table below the chemical symbol
the same for every element
15
Elements CANNOT be broken down into simpler substances
False
True
16
273 K is the same as...
32 degrees Celsius
100 degrees Farenheit
0 degrees Celsius
0 degrees Farenheit
17
Which of the following is a pure substance?
brass
sand
Caesar salad
water
18
Round 1.457 to the tenths place.
1.5
1.56
1.0
1.46
19
Numbers written in scientific notation are multiplied by the power of...
Love
Coefficients
6
10
20
What is the chemical symbol for silver?
Sl
Hg
Ag
Si
21
The Periodic Table organizes the elements into groups with SIMILAR properties and in order of INCREASING atomic mass
True
False
22
Which of the following is NOT a metal?
magnesium
potassium
chlorine
iron
23
All of these are characteristics of the atomic number EXCEPT
is the same for all atoms of an element
is a whole number specific for each element
is equal to the number of electrons in an atom
appears above the symbol of an element in the periodic table
24
The mass number is equal to the number of electrons + the number of neutrons
False
True
25
How many significant figures does the number 2630 have?
1
3
2
4
