What can you conclude from the fact that electrons orbit far away from atomic nuclei?

Atoms are comprised mostly of empty space

What is the significance of the periodic table of elements?

It predicts & lists all chemical elements in the universe

What do electrons in the same shell have in common?

They have the same amount of energy

Oxygen has an atomic number of 8. What can you conclude from this fact?

An atom of oxygen has 8 protons.

The word "atom" comes from a Greek word for "indivisible." In what way are atoms indivisible?

They cannot be broken apart w/o losing chemical properties

How are molecules different from atoms?

They consist of several atoms bonded together.

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BrainPOP: Atoms

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Answers

1
What can you conclude from the fact that electrons orbit far away from atomic nuclei?
Atoms are comprised mostly of empty space
Protons have a positive charge
Electrons are extremely small
Atoms consist of subatomic particles
2
LAST Q: In the following diagram, what does the number 12 represent?
An atomic mass
An atomic number
A chemical symbol
A number of electrons
3
What is the significance of the periodic table of elements?
It lists all the different metals known to humans
It explains where different atoms can be found
It predicts & lists all chemical elements in the universe
It proves that atoms are the building blocks of matter
4
What do electrons in the same shell have in common?
They are all positively charged
They are all made up of atoms
They have the same amount of energy
They all have neutral charges
5
Which of the following is an example of a subatomic particle?
Hydrogen
Oxygen
Electron
Carbon
6
What two types of particles exist within an atomic nucleus?
Protons and neutrinos
Protons and neutrons
Positrons and neutrons
Neutrons and electrons
7
What might happen if the strong force didn't exist?
Neutrons would not exist
Atomic nuclei would fly apart
Electrons would have positive charges
It would be more difficult to split atoms
8
Oxygen has an atomic number of 8. What can you conclude from this fact?
An atom of oxygen has 4 protons and 4 electrons.
An atom of oxygen has 8 protons.
An atom of oxygen has 8 positrons.
An atom of oxygen weighs 8 grams.
9
The word "atom" comes from a Greek word for "indivisible." In what way are atoms indivisible?
They cannot form bonds with other atoms
They cannot gain or lose electrons
They cannot be separated once theyve bonded with other atoms
They cannot be broken apart w/o losing chemical properties
10
How are molecules different from atoms?
Their particles do not have electrical charges.
They consist of several atoms bonded together.
They do not have nuclei.
They do not contain neutrons.

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