Atomic Theory and The Atom

What is the number of protons that the element in the image contains?

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

What is the atomic mass of 'F'?

• 9

• 18

• 17

• 19

Tags

NGSS.MS-PS1-1

The positive particles of an atom are

• electrons

• positrons

• neutrons

• protons

What type of charge do electrons have?

• Negative

• Positive

• Neutral

Tags

NGSS.MS-PS2-3

What are the three particles that make up an atom?

• Protons, neutrons, and isotopes

• Neutrons, isotopes, and electrons

• Positives, negatives, and electrons

• Protons, neutrons, and electrons

Tags

NGSS.MS-PS1-1

The atomic number of an element is the total number of which particles in the nucleus?

• Neutrons

• Protons

• Electrons

• Protons and electrons

If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom?

• 10

• 20

• 30

Tags

NGSS.MS-PS1-1

What is the charge of a neutron?

• Positive

• Negative

• Neutral

What is the mass number defined as?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the atomic number of Barium, Ba? (enlarge the periodic table)

• 20

• 38

• 56

• 88

Tags

NGSS.MS-PS1-1