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Atoms and Bonding
Atoms and Bonding
25 terms
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StudBud Administration
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#7thgrade #atoms #bonding #periodic table
Flashcards
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Questions
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Answers
1
What determines an elements chemistry?
number of valence electrons
number of protons
atomic number
number of neutrons
2
How are atoms held together in an ionic bond?
by electrons freely moving around an ion
by sharing electrons
glue
by transferring electrons
3
What is the chemical symbol for oxygen?
X
O
Ox
OOO
4
How many valence electrons would an element in group 16 have?
16
6
8
0
5
Ionic bonds form between two ions that have…
opposite charges
positive charges
negative charges
ionic compounds
6
What is a double bond?
one pair of electrons shared between atoms
a bond between two atoms
two pairs of electrons shared between four atoms
two pairs of electrons shared between atoms
7
What is an electron dot diagram?
a diagram showing a chemical symbol and valence electrons
this means nothing to me
a doodle
a square from the periodic table
8
What is located in the nucleus of an atom?
electrons and neutrons
protons and neutrons
electrons only
protons, neutrons, and electrons
9
A mixture of two or more elements, where at least one is a metal is called ...
a superconductoor
a complex metal
an alloy
a metallic bond
10
What is a chemical bond?
when atoms share electrons
when a solid turns into a liquid
when electrons disappear
an attraction between two or more atoms
11
How are atoms held together in a covalent bond?
they share electrons
glue
they transfer electrons
they have electrons freely moving around an ion
12
How many valence electrons do elements need to be 'happy'?
0
5
18
8
13
What is a chemical symbol?
one or two letters that represent an element
a type of shorthand scientists use
nonsense
random letters
14
What is the smallest form of matter?
atom
molecule
particle
element
15
what are the rows on the periodic table called?
rows
groups
columns
periods
16
What are the columns on a periodic table called?
rows
groups
periods
columns
17
What is a synonym for luster?
bendable
shiny
pretty
dull
18
What describes a chemical formula?
ratio of elements
elements in the same group
bonding atoms
elements in the same period
19
Electrons involved in bonding between atoms are ...
positively charged
inside the nucleus
closest to the nucleus
valence electrons
20
What is a property of metal that means it can be rolled into thin sheets or formed into shapes?
malleability
luster
thermal conductivity
ductility
21
When an atom gains or loses and electron, what does it become?
a molecule
a compound
an ion
an atom
22
What describes the structure of a metal?
hard, stiff, and dull
metal ion surrounded by freely moving electrons
a bond that shared electrons
a bond that transfers electrons
23
When a polar liquid and a nonpolar liquid are put in the same contain, what happens?
They mix
they explode
They separate
the evaporate
24
What describe valence electrons
electrons with the highest energy level
protons
electrons with no energy
electrons with the lowest energy level
25
Which of the following is a property of an ionic compound?
they have love melting points
they form hard, brittle crystals
they have a low boiling point
they contain metals
