Which of the following is a true statement?

Periods in Rows; groups in columns

What is true of all atoms?

They contain at least one proton.

Noble gases are sometimes called inert gases. What can you infer about the meaning of the word “inert “ in chemistry ?

It refers to substances that do not react with other substances

What do the elements in the second row have in common?

The same number of electron shells.

What characteristics are shared by all alkali metals and alkaline earth metals?

They form alkaline solutions when mixed with water

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Answers

1
Which of the following is a true statement?
Periods in Rows; groups in columns
Categories in rows; gases in columns
Groups in Rows; periods in columns
Gases in rows; categories in columns
2
What is true of all atoms?
They contain more than one electron shell
They contain at least one proton.
They have a full outer electron shells.
They are electrically charged
3
If you wanted to find a sample of fermium, which has an atomic number of 100, where would you look?
In a science lab
Deep within the Earth
In outer space
In the Earth’s atmosphere
4
To become positively charged, and atom must:
Lose a proton
Lose an electron
Gain a proton
Gain an electron
5
What is one key physical difference between transition metals and poor metals?
atomic mass
Reactivity
Charge
Hardness
6
Noble gases are sometimes called inert gases. What can you infer about the meaning of the word “inert “ in chemistry ?
It refers to substances that easily lose their electrons
It refers to substances that do not react with other substances
It refers to substances they have astrong electrochemical charges.
It refers to gases
7
What are nucleons?
Glutens and leptin
Atoms and molecules
Positrons and electrons
Protons and neutrons
8
What do the elements in the second row have in common?
The same number of electrons
The same number of neutrons
The same number of electron shells.
The same number of protons
9
Carbon has an atomic number of six what can you conclude about carbon from this fact?
It has six protons
It’s in group 6
It has six neutrons
It’s in. Six
10
What characteristics are shared by all alkali metals and alkaline earth metals?
They conduct electricity very well
They are strong and shiny
They form alkaline solutions when mixed with water
They do not react with water at all

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