stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
2016 Chemistry CP Final Review (part 2) Flashcards | StudBud
Explore
/
2016 Chemistry CP Final Review (part 2)
2016 Chemistry CP Final Review (part 2)
25 terms
·
StudBud Administration
·
40 plays
covers chapter 3-7 of Prentice Hall Chemistry
Flashcards
25 cards
F
Practice quiz
P
Host live
L
Questions
25
Answers
1
How does the
size
of an atom change when you
go down a group?
it decreases
it increases
not enough information given
it doesn't change
2
Which of these atoms are isotopes of the same element:
20
10
E,
20
11
E,
21
9
E,
21
10
E ?
2010E and 2011E
2010E and 2110E
219E and 2110E
3
What is the difference between Cl-35 and Cl-37?
Cl-37 has 2 more electrons
Cl-37 has 2 more neutrons
Cl-37 does not exist
Cl-37 has 2 more protons
4
Which of the following is NOT a part of Dalton's atomic theory?
Atoms are always in motion.
All elements are composed of atoms.
Atoms of the same element are identical.
Atoms that combine do so in simple whole-number ratios.
5
What is
mass number?
# of electrons
# of protons + neutrons
# of protons + electrons
# of neutrons
6
How is light formed by an atom?
when electrons drop from an excited state to ground state
when electrons jump from ground state to an excited state
7
Why do atoms of an element have
neutral charge?
because they have an equal number of protons + neutrons
because they have an equal number of protons + electrons
because they have an equal number of neutrons + electrons
8
How many
valence electrons
are in an atom of
calcium?
2
20
7
17
9
What does an atom look like?
nucleus made of protons + neutrons w/electrons in orbitals
nucleus composed of protons, neutrons and electrons
nucleus made of electrons + neutrons w/protons in orbitals
nucleus made of protons + electrons w/neutrons in orbitals
10
Isotopes
of the same element have different ____.
numbers of electrons
numbers of protons
atomic numbers
numbers of neutrons
11
What do the numbers 21 and 9 represent in
21
9
X
?
number of neutrons and number of electrons
number of neutrons and number of protons
mass number and atomic number
atomic number and mass number
12
Cu has 2 isotopes, Cu-63 (75% abundance) + Cu-65 (25% abundance). Calculate
average atomic mass
63 amu
64.5 amu
63.5 amu
64 amu
13
In order to calculate the
average atomic mass
of an element, what do you need?
calculator
all of the above
relative abundance of isotopes
atomic mass of isotope
14
What is the
mass
of a piece of wood that has a density of 0.5 g/mL and a volume of 20 mL?
40 g
10 g
0.025 g
10 mL
15
What is the
volume
of a block of metal with a density of 0.5 g/mL and a mass of 18 grams?
36 g/mL
36 g
0.028 mL
36 mL
16
Dalton
said atoms are indivisible + all atoms of an element are identical. Now it's known that
all of Dalton's hypotheses are correct
all atoms of an element aren't identical.
atoms are divisible
atoms of an element can have different numbers of protons
17
The
atomic number
of an element is the total number of which particles in the nucleus?
electrons
protons + electrons
protons
neutrons
18
What does the number 14 mean in Carbon-14?
atomic number
number of neutrons
number of electrons
atomic mass
19
How many
protons, neutrons and electrons
are in an atom of copper-65?
29, 29, 36
27, 38, 27
24, 41, 24
29, 36, 29
20
Name the units we use in chemistry to measure
mass, volume and density.
g/mL, grams and liters
grams, liters and g/mL
liters, grams and g/mL
pounds, ounces and g/mL
21
What is the
density
of 10 mL of a substance that has a mass of 20 grams?
1.0 g/mL
200 g/mL
0.5 g/mL
2.0 g/mL
22
How does the
size
of an atom change when you
go left across a period?
it doesn't change
it decreases
it increases
not enough information given
23
When did John Dalton live?
1856 - 1940
1868 - 1953
1766 - 1844
460 BC - 370 BC
24
Dalton's atomic theory included which idea?
Atoms of the same element are always identical.
Individual atoms can be seen with a microscope.
Atoms of different elements always combine in 1:1 ratios.
All atoms of all elements are the same size.
25
Who lived from 460 BC – 370 BC and was among the first to suggest the idea of atoms?
Atomos
Democritus
Dalton
Sophocles
