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Science: Atomic Structure Periodic 2015 Flashcards | StudBud
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Science: Atomic Structure Periodic 2015
Science: Atomic Structure Periodic 2015
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Atomic Structure Periodic Table 2015
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
All electrons in an atom have what electrical charge?
-1
no charge
+1
+2
2
What is the atomic mass of bromine?
115
35
70
80
3
The most reactive non-metals are the:
alkali metals
halogens
rare earth metals
transition metals
4
Which statement is the best descriptor of a proton?
It moves around the nucleus
It has a positive charge.
It has a negative charge.
It has no mass.
5
Most nonmetals are:
malleable and ductile
poor conductors of heat and electricity
good conductors of heat and electricity
liquid at room temperature
6
Two isotopes of the same element must have the same
number of neutrons and the same atomic mass
number of protons and different number of neutrons
atomic symbol and the same number of neutrons
number of protons and the same atomic mass
7
Where is most of the mass of an atom located?
in the protons
in the neutrons
in the electrons
in the nucleus
8
Which elements are often used in jewelry and industrial tools?
transition metals
rare earth metals
metalloids
alkaline earth metals
9
Sodium reacts with water. Which element is most likely to have similar properties to sodium?
Iron
Magnesium
Bromine
Lithium
10
Most elements on the periodic table are:
radioactive
metalloids
metals
nonmetals
11
Which atomic structure has the least amount of mass?
ion
neutron
electron
proton
12
When a neutral atom gains of loses electrons it becomes
radioactive
an ion
an isotope
less charged
13
The least reactive elements on the periodic table are the:
noble gases
alkali metals
halogens
transition metals
14
Which of the following is a noble gas?
I (iodine)
H (hydrogen)
Ne (neon)
S (sulfur)
15
What is the difference between the three isotopes of hydrogen, H-1, H-2, and H-3?
amount of electrons
amount of protons
amount of neutrons
size of electron and electron cloud
16
Which of the elements below would be malleable, ductile, shiny, conduct heat and electricity?
S (sulfur)
C (carbon)
Fe (iron)
Br (bromine)
17
What happens when an atom gains an electron?
The atom loses a proton.
The atom becomes negatively charged.
The atom becomes positively charged.
The atom gains additional mass.
18
Elements in a group have
similar properties.
a wide range of chemical properties.
the same atomic mass.
the same number of electrons.
19
An element that has some properties of both metals and of nonmetals is referred to as a:
metalloid
rare earth metal
transition metal
radioactive halogen
20
What do all neutral elements in group II a have in common?
They all same number of Bohr energy levels.
They all have the same atomic number.
They all have the same number of valence electrons.
They have a wide range of chemical properties.
21
Elements in a period have
the same number of protons.
similar properties.
the same number of valance electrons.
a wide range of chemical properties.
22
When magnesium reacts with some elements, it
loses
2 electrons. What is the charge?
-4
+2
+4
-2
23
If an atom has 11 protons and 10 electrons, then the atom is:
neutral.
negatively charged.
positively charged.
radioactive.
24
Different samples of an element has 12 protons, but different # of neutrons. Which is true?
The atomic number is different for each element.
All of the samples have the same atomic mass
They are isotopes of the same element.
They are ions of the same element.
25
This isotope contains (58.933 rounded to 60):
60 ptotons and 27 neutrons
33 protons and 27 neutrons
27 protons and 60 neutrons
27 protons and 33 neutrons
