Atoms and Periodic Table of Elements

Beryllium has how many protons?

• 4

• 9.0122

• 2

• 13.0122

Tags

NGSS.MS-PS1-1

What element is this model showing?

• Lithium

• Boron

• Carbon

• Neon

Tags

NGSS.MS-PS1-1

Which of the following element in period 3 would be classified as a metal?

• Boron (B)

• Sodium (Na)

• Argon (Ar)

• Silicon (Si)

Match the correct parts of the periods table

• Rows 1-7

• Nonmetals

• Yellow (Right)

• Groups

• Red (middle)

• Periods

• Columns 1-18

• Metalloids

• Blue (left)

• Metals

Label the parts of the periodic table​

a

b

c

Metals

Nonmetals

Metalloids

What do we call the vertical columns on the periodic table?

• Periods

• Groups

Answer explanation

The horizontal rows on the periodic table are called periods. Each period represents a different energy level of electrons in the atoms of the elements in that row.

What do we call the horizontal rows on the periodic table?

• Periods

• Groups

Answer explanation

The horizontal rows on the periodic table are called periods. Each period represents a different energy level of electrons in the atoms of the elements in that row.

The particles that are found in the nucleus of an atom are

• neutrons and electrons

• electrons only

• protons and neutrons

• protons and electrons

Which subatomic particle has a negative charge?

• Proton

• Neutron

• Electron

• Quark

What element is this?

• Helium

• Hydrogen

• Argon

• Silver

Tags

NGSS.MS-PS1-1