Nitrogen has one more valence electron than carbon hasand therefore we can infer

Nitrogen and carbon are in different groups

Covalent bonds form when

atoms of elements, usually nonmetals, shareelectrons

To find out how many neutrons there are in the nucleus of an atom, you

subtract the atomic number from the atomic massnumber.

neutrons, protons and electrons are

subatomic particles and are not made of atoms

weaker than ionic bonds or covalent bonds.

· the up and down columns of the periodic table

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Atoms and the periodic table

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atoms

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Answers

1
Nitrogen has one more valence electron than carbon hasand therefore we can infer
They are in the same group
They have the same atomic mass
They are in the same period
Nitrogen and carbon are in different groups
2
In chemical changes, atoms are rearranged to
create an ionic bond
create a metalic bond
create the same substance
form a new substance
3
ductility and malleability are properties of...
metaloids
minerals
metals
gasses
4
What type of atoms are circled below
mataloids
metals
nonmetals
nobel gasses
5
This model is like a model of the solar system because they both showorbits around a big center
Bohr
electron clould model
Rutherford's model
Chadwick model
6
Covalent bonds form when
When the atom is balanced
When negative and positive charges balance one another out
When electrons slide past one another
atoms of elements, usually nonmetals, shareelectrons
7
To find out how many neutrons there are in the nucleus of an atom, you
add the electrons and protons
subtract the nuetrons from the protons
subtract the atomic number from the atomic massnumber.
add the electrons, protons and neutrons
8
When an atom loses an electron in its outer shell it becomes
a metal
a covalant bond
an isotope
an ion
9
neutrons, protons and electrons are
subatomic particles and are not made of atoms
are all negatively charged
are all positively charged
are matter made of atoms
10
Metallic bonds are
weaker than ionic bonds or covalent bonds.
weaker than covalent bonds
stronger than ionic bods
stronger than covalent bonds
11
Groups are
Rows 13 through 18
The verticle rows
rows 1 through 8
· the up and down columns of the periodic table
12
A small mass of positive charge was found in the center of the atom which prompted scientist to
decide that atoms do not exist
change the structure the nucleus
change the model of the atom
change the atomic theory

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