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Atoms, Compounds, and the Periodic Table
Atoms, Compounds, and the Periodic Table
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#atoms#periodictable
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1
If I study hard for my Ch. 2 science test, I will
all of the above
Make my teacher proud
Feel so good when I know the answers when I take the test
Make a good grade
2
You can predict an element's _______from it's location on the periodic table.
Properties
Chemical Name
Discovery Date
Chemical Symbol
3
A
group
or
family
on the periodic table is the
horizontal
row of elements.
True
False
4
Alkali Metals are the most reactive metals in the periodic table.
False
True
5
If the atomic number of an element is 16, then the following is true for its atom
the number of electrons is 16
Both A and B
None of the Above
the number of protons is 16
6
True or False: Calcium and Magnesium are the two most common alkaline earth metals.
False
True
7
In the cloud model, electrons occupy a ______ region around the nucleus.
cloudlike
specific
southern
northern
8
Elements in the same column (or group) have
the same atomic mass
the same melting point
similar characteristics
the same atomic number
9
The halogens are reactive, while the noble gases are nonreactive.
False
True
10
The proton and neutron particles have the greatest mass out of the whole atom.
True
False
11
Bohr's model of the atom consisted of a central ____.
nucleus
station
bullseye
electron cloud
12
You will notice a major change in the properties of the elements as you move
Down the groups
Across the periods
13
This scientist proposed an atomic model having mostly empty space, but having a dense + center.
Rutherford
Jimmy Neutron
Mrs. Frizzle
Democritis
14
True or False: Metals are malleable and ductile, but can not carry an electric current.
False
True
15
An example of thermal conductivity would be
cell phone charger charging a phone
water changing to ice in a freezer
a cast iron pan on a stove cooking food
sweating
16
The halogen family includes
silver, gold, and platnium
Hal, Harriet, Hank
fluorine, chlorine, bromine. and iodine
potassium and sodium
17
_________________ move around the nucleus.
Elements
Electrons
Protons
Neutrons
18
The elements on the right side of the periodic table are least reactive.
False
True
19
You can identify an atom if you are given its number of protons and neutrons.
False
True
20
The atomic number of an element tells you the number of _____an atom has.
protons
neutrons
electrons
Both A and C
21
What happens to the atoms of most nonmetals when they react with other elements?
All of the above
The don't react with other elements
They usually gain or share electrons
They usually lose electrons
22
Elements that do not ordinarily form compounds are
elements in the carbon family
noble gases
metals
halogens
23
A copper wire is
brittle
dull
ductile
highly reactive
24
At room temperature, more than half of the nonmetal elements are...
liquids
plasma
solids
gases
25
How could Mendeleev predict the properties of elements that had not yet been discovered?
He just guessed
He was just smart like that
the properties of the groups/families
the properties of the periods