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Honors chem - Chapter 1 Flashcards | StudBud
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Honors chem - Chapter 1
Honors chem - Chapter 1
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review for topic 1 test
Flashcards
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Questions
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Answers
1
The atomic number of an atom ...
tells us an atoms mass
tells us an elements group number
tells us the number of neutrons in an atom
tells us the number of protons in an atom
2
JJ. Thomson is responsible for the discovery of
the electron
the proton
the nucleus
the atom
3
What is the name and charge of an ion formed from an aluminum atom?
aluminide; +3
aluminum; -3
aluminide; -3
aluminum; +3
4
Which nuclear particle causes an decrease in both atomic number and mass number?
a beta particle
an alpha particle
a gamma particle
5
What property of alkali metals make them highly reactive?
they conduct electricity
they conduct heat
thy have one valence electron
thy are soft and shiny
6
How was Mendeleev's periodic table arranged?
by increasing atomic mass
by increasing atomic number
by decreasing atomic number
by decreasing atomic mass
7
How many electrons are in an atom of calcium?
18
40
20
36
8
The most abundant form of a bromine atom is...
Br-36
Br-80
Br-35
Br-17
9
In order for the stable isotope Pb-206 to form from Bi-210 what needs to happen?
two alpha emissions
two gamma emissions
one alpha and one beta emission
two beta emissions
10
What is the name and charge of the ion formed from a chlorine atom?
chlorine; +1
chloride; -1
chlorine; -1
chloride; +1
11
Atoms have no electric charge because they
have an equal number of protons and electrons
have an equal number of charges and noncharged particles
have neutrons in their nuclei
have an equal number or neutrons and protons
12
The smallest unit of an element that maintains all of the properties of that element is a(n)
molecule
atom
nucleus
compound
13
How many protons are in an atom of aluminum?
13
27
18
10
14
When U-240 undergoes beta decay, what new isotope is formed?
Th-236
Ra-238
Np-240
U-241
15
What would be different about 2 isotopes of the same element?
They have a different number of protons
They have a different mass
They have a different atomic number
They have a different number of electrons
16
When a barium atom forms an ion it contains...
56 protons and 137 electrons
56 protons and 58 electrons
56 protons and 56 electrons
56 protons and 54 electrons
17
Which of the following statement was not part of Dalton's atomic theory?
atoms of different elements form compounds
atoms cannot be divided
atoms of an element are alike
atoms are made of electrons
18
In order to calculate the average atomic mass of an atom, you must know the following info...
the number of isotopes
the mass of each isotope
all of the above
the abundance of each isotope
19
Which of the following are isotopes of the same element?
Sn+4 and Sn+2
F and F-
H-1 and He-4
Sn-118 and Sn-116
20
How many protons, neutrons and electrons are in P-31?
15protons;31neutrons;31electrons
15protons; 16neutrons; 15electrons
15protons; 15neutrons; 15electrons
15protons; 31neutrons; 15electrons
21
What ion would be formed from a nitrogen atom?
N+3
N+5
N-2
N-3
22
Which statement about noble gases is correct?
they are highly reactive with both metals and nonmetals
they are found in the crust of the earth
they form diatomic molecules
they exist as single atoms rather than as molecules
23
Which nuclear particle would be attracted to a positively charged metal slab?
an alpha particle
both an alpha and a beta particle
a beta particle
a gamma particle
24
Metalloids are elements that
undergo radioactive decay
do not form compounds
can conduct heat and electricity under certain conditions
have large atomic masses but small atomic numbers
25
What group on the Periodic Table includes elements that are stable?
transition elements
noble gases
alkali metals
halogens
26
Atoms of elements that are in the same group have the same number of
protons
valence electrons
total electrons
neutrons
27
According to the law of conservation of mass
mass is lost only in chemical changes
mass is lost only in physical changes
mass is lost in both chemical and physical changes
total mass stays the same in chemical and physical changes
28
In an atom: protons are located __ ; neutrons are located __; and electrons are located __
in nucleus; outside nucleus; outside nucleus
in nucleus; in nucleus; outside nucleus
in nucleus; outside nucleus; in nucleus
in nucleus; in nucleus; in nucleus
29
What would be the same about 2 isotopes of the same element?
They only have the same number of protons
They have the same number of protons and electrons
They only have the same number of electrons
They have the same mass number
30
Which of the following is true about the formation of ions?
nonmetals form cations by losing electrons
metals form cations by losing electrons
metals form anions by losing electrons
nonmetals form cations by gaining electrons
31
Ernest Rutherford is responsible for the discovery of the
nucleus
proton
electron
neutron
32
The most abundant form of Cobalt...
has 59 neutrons
has 27 neutrons
has 30 neutrons
has 32 neutrons
33
Which of the following is not a property of halogens?
they are the most reactive nonmetals
they form diatomic molecules
they easily form anions
they are shiny and malleable
34
Why do atoms form ions?
So they have more electrons than protons
So they increase their mass number
So that they decrease their mass
So they have a full valence shell
35
Valence electrons determine an atom's
chemical properties
period
mass
36
The charge of our subatomic particles is...
- proton; + electron; no charge neutron
+ proton; no charge electron; - neutron
+ proton; -electron; no charge neutron
+ proton; + electron; no charge neutron
37
Which nuclear particle causes an increase in the atomic number but not the mass number?
a beta particle
an alpha particle
a gamma particle
38
Which pair of elements would most likely have a similar chemical behavior?
helium and fluorine
carbon and nitrogen
boron and aluminum
chlorine and oxygen
39
The order of elements on the current Periodic Table is based on
atomic mass
the number of protons in the nucleus
the number of neutrons in the nucleus
the electric charge of the nucleus
40
Neils Bohr is responsible for placing the electrons
in energy levels outside the nucleus
in the center of an atom
in a random arrangement outside of an atom
in waves in the atom
