stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Cahill midterm Flashcards | StudBud
Explore
/
Cahill midterm
Cahill midterm
61 terms
·
StudBud Administration
·
10 plays
#grade_11 #grade_10 #chemistry
Flashcards
61 cards
F
Practice quiz
P
Host live
L
Questions
61
Answers
1
Which group contains atoms that have the lowest attraction for electrons
Group 19
Group 2
Group 1
Group 16
2
The average atomic mass of an element is
The sum of the number of neutrons and protons
the same as the atomic number of the element
weighted average of all naturally occurring isotopes
the mass of one isotope of the element
3
Which properties are common to elements within a single group on the periodic table
Color & luster
Chemical properties & ability to bond to atoms
Boiling point & freezing point
Atomic weight & number
4
Sample of bismuth has a mass of 343g and a volume of 35.0cm^3. What is the density
1.20 x 10^4 g/cm^3
1.20 x 10^4 g/cm^3
9.80 g/cm^3
.102 g/cm^3
5
Mass of 3.56mol of glucose (The molar mass of C6 H12 O6 is 180.18 g/mol.)
102g
641g
308g
549mol
6
Which of the following is an example of a heterogeneous mixture
Gold ring
Chunky peanut butter
Orange colored water
Tap water
7
how many moles are in a 35.65 g sample of NaOH? (The molar mass of NaOH is 40.01g/mol)
1.122mol
0.8910mol
1426mol
7182mol
8
Which is an extensive property of matter
Density
Volume
Boiling point
Melting point
9
As electrons add to s and p, they are pulled closer to the nucleus, causing
Nucleus to increase in size
Atomic radii to increase in size
Atomic radii to decrease in size
Atomic radius explodes
10
For P block elements the total number of electrons is equal to
Group number plus 9
Group number minus 6
Group number plus 3
Group number minus 10
11
Horizontal rows in a periodic table
Columns
Period
Family
Group
12
SI base unit for mass
Kilogram
Cubic meter
Meter
Gram
13
Every pure chemical compound consists of two or more elements that
Cannot be seperated
Can be separated by physical change
Are combined chemically
Are combined in any proportion
14
Compared with a mole of lead atoms, a mole of iron atoms
Has the same number of atoms
Has fewer atoms
Has more atoms
Cannot be determined
15
When 6.02 mc012-1.jpg 10 23 is multiplied by 9.1 mc012-2.jpg 10 -31, the product is
5.5 x 10^-7
5.5 x 10^-8
5.5 x 10^53
5.5 x 10^67
16
Protons are bound together by
Electric forces
Gravitational forces
Strong nuclear forces
Magnetic forces
17
Which of the following is an intensive property of matter
Mass
Volume
Density
Energy content
18
Precision is related to all of these except
Range of measurement values
Number of sig figs
Reproducibility
Closeness of a measurement to the accepted value
19
Scientist working with math & computer models. He is working in
Theoretical chemistry
Physical chemistry
Analytical chemistry
Biochemistry
20
A homogeneous mixture is one that
Acts as a solvent
Is uniform in composition
Cannot change state easily
Contains only one element
21
Units of molar mass
G/mol
Amu/mol
Amu/g
Mol/g
22
A scientist trying to find a safer chemical for industrial purposes is an example of
Applied research
Technological development
Basic research
None of the above
23
Smallest unit of matter
Molecule
Mixture
An atom
Compound
24
Forming an ion, which sub level would an atom of nickel lose electrons
3s
3d
4s
3p
25
Water boiling at 100C is an example of
Extensive property
Physical property
Chemical property
Chemical change
26
Number of sig figs in 170.040km
Five
Four
Three
Six
27
What is an example of a nonmetal
Phosporus
Copper
Cadmium
Mercury
28
scientists to concluded that cathode rays are composed of
Positive particles
Neutral particles
Negative particles
Doodoo
29
Rutherford’s gold-foil experiment led him to conclude that
positive charge existed in the atom
Light was emitted by electrons
Aloha particles were a poor choice for a material
30
All the alkali metals are found in
Group 7
Period 8
Group 3
Group 1
31
Example of extensive property
Density
Mass
Color
Boiling point
32
Noble gases are generally
Brittle
Malleable
Unreactive
Semiconductors
33
One way to separate the different kinds of matter in a mixture is through
Chemical reactions
Decomposition
Filtration
Electrolysis
34
NOT an SI base unit
Pound
Kelvin
Ampere
Meter
35
The metalloids are located on the period table between
Where the metalloids are
Doodoo
Metals and nonmetals
Metals and gases
36
Which property would be least helpful in determining whether a substance is a metal or nonmetal
State
Conductivity
Luster
Ductility
37
An object’s weight is a measure
Amount of material per unit volume
Force with which it is attracted by gravity
Pressure exerted on a scale
Force causing the object to move
38
Which of these are qualitative
Iron is denser than aluminum
Chemical reaction is complete in 2.3s
Solid has mass of 23.4g
Compound melts at 87.5C
39
Mixtures and compound difference
All mixtures have uniform composition
Mixtures are made of two elements or more
Mixtures can be separated by physical processes
Mixtures are heterogeneous
40
0.0265g rounded to two sig figs
0.030g
0.027g
0.026g
0.03g
41
An element near argon in the periodic table would probably be
Solid at room temp
Shiny and malleable
Good electrical conductor
Poor heat conductor
42
Which ionization energy is generally the largest
First
Fourth
Third
Second
43
SI base units for time and temp
Hour and kelvin
Second and kelvin
Hour and degree celsius
Second and degree celsius
44
Example of an element
Sugar
Water
Soil
Oxygen
45
a scientist working in a lab, with compounds containing carbon. She is most likely working in
None of the above
Theoretical chemistry
Inorganic chemistry
Organic Chemistry
46
Which of the following changes is a chemical change of matter
Ice melting to produce water
Liquid silica solidifying to form glass
Vinegar combining with baking soda
Water boiling to produce water vapor
47
According to the law of definite proportions, any two samples of KCl will have
same elements in the same proportions by mass
The same mass
slightly different molecular structures
different densities
48
An atom of potassium has 19 protons and 20 neutrons. Its mass number is
19
20
9
39
49
Expressed in scientific notation 0.0930m
9.30 x 10^-4m
9.30 x 10^-2m
9.3 x 10^-3
50
Which of the following elements have have full outer energy levels in a ground state
Halogens
Noble gases
Transition metals
Alkali metals
51
Research carried out for sake of increasing knowledge is
None of the above
Basic research
Technological development
Applied research
52
Which process is a chemical change
Burning in air
Heating to boiling
Slicing into two pieces
Dissolving in alcohol
53
Which feature of Dalton’s atomic theory is different from modern atomic theory?
Atoms cannot be rearranged in chemical reactions
Atoms cannot be subdivided
Atoms combine in whole-number ratios
Atoms cannot be destroyed
54
Which of the following elements has an electron affinity
Alkali metals
Transition metals
Noble gases
Halogens
55
Which of the following changes is a physical change of matter
Silver spoon tarnishing
Water evaporating
Nail rusting
Paper burning
56
Homogeneous mixtures are also called
Compounds
Molecules
Atoms
Solutions
57
Which is a heterogeneous mixture
Nitrogen
Salt
Mud
Air
58
Which measurements are all the zeros considered to be non sig figs
400.mL
506mL
0.0037mL
60.0mL
59
Which is a pure substance
Granite
Air
Stainless steel
Water
60
The molecular mass of CO2 is 44.01 amu. What is the mass of 2.0 mol of CO2
44.01amu
88.02amu
44.01g
88.02g
61
The atomic symbol for beryllium indicates that the
Mass number is 4
Atomic number is 6
Atomic number is 4
Atomic number is 9
