The chemical symbol for Manganese

• Mg

• Mn

• Mo

• Ma

What are the positively charged particles in an atom?

• Protons
• Neutrons
• Electrons

Tags

NGSS.MS-PS1-1

Electrons have what charge?

• Negative
• Positive
• Neutral
   (No Charge)

Tags

NGSS.MS-PS2-3

The nucleus of an atom is made up of...

• Protons and Neutrons
• Neutrons and Electrons
• Protons and Electrons

Tags

NGSS.MS-PS1-1

The image shows the periodic grid for POTASSIUM. What is Potassium's atomic number?

• 19
• 39
• 20
• Impossible to tell

What does the ATOMIC MASS tell us about an atom?

• Protons + Neutrons
• Protons + Electrons
• Neutrons + Electrons

How many Oxygen atoms are in H₂O?

• 1

• 2

• 0

• 4

Tags

NGSS.MS-PS1-1

What are the building blocks of MATTER?

• Atoms
• Cells
• Protons
• Neutrons

Tags

NGSS.MS-PS1-1

Most of the nonmetals are?

• solids
• liquids
• gases

The electrons in the outermost energy level are called 

• neutrons
• protons
• valence electrons
• isotopes