Life Science

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

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 does an atom's period tell us?

• Number of protons
• Number of electrons
• Number of valence electrons
• Number of shells

What is the element symbol for boron? 

• B
• Bo
• Bn
• W

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

• Boron (B)

• Sodium (Na)

• Argon (Ar)

• Silicon (Si)

Columns on the periodic table are called...

• periods

• groups or families

• valence

• energy levels

The groups on the periodic table correspond to the number of ________ in an atom.

• valence electrons

• energy levels

• protons

• neutrons

True or False? An atom is SMALLER than a molecule.

• True

• False

Matter is...

• Energy, like light and sound

• What everything is made of