Periodic Table and Atoms

A nucleus of an atom contains what two parts?

• Electrons and Protons

• Neutrons and Electrons

• Protons and Neutrons

Tags

NGSS.HS-PS1-8

Electron in the outermost energy level are called?

• Valence Electron

• Valence Proton

• Valence Neutron

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

__________ are Group 1 metals and are soft and react with water

• Alkai Metals

• Transitional Metals

• Noble Gases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Elements in the same _________ have the same number of valence electrons.

• Period

• Group

Tags

NGSS.HS-PS1-1

How many neutrons does Chlorine (Cl) with an atomic number of 17 and an atomic mass of 35.

• 17

• 18

• 19

The atomic number of an element is the number of _______ it has.

• protons

• neutrons

• electrons

• protons and neutrons

Tags

NGSS.MS-PS1-1

The periodic table is organized into columns called _______ and rows called ______.

• groups and periods

• periods and groups

• categories and periods

• categories and groups

Tags

NGSS.HS-PS1-1

Which element would you expect to be located in group 2 of the periodic table?

• Lithium

• Carbon

• Sulfur

• Beryllium

If an atom has 24 protons and 24 electrons, what is the atomic number of this element?

• 24
• 48
• 0
• 42

Tags

NGSS.MS-PS1-1

How many protons does this element have?

• 40
• 21
• 20
• 41

Tags

NGSS.MS-PS1-1