Atoms: Structure and Average Atomic Mass

Atoms: Structure and Average Atomic Mass

Poll

Which part of an atom do you know about?

• proton

• neutron

• electron

• nucleus

• quark

Multiple Choice

The mass of an atom is located in the ___________ and the volume of an atom is made of the ____________

• electron cloud, nucleus

• electron cloud, energy levels

• nucleus, electron cloud

• nucleus, neutrons

Multiple Choice

What is true about a neutral atom?

• The number of protons equal the number of neutrons

• The number of protons equal the number of electrons

• The number of neutrons equal the number of electrons

• The number of protons, neutrons, and electrons are all different

Multiple Choice

An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are ____.

• 152 protons and 76 electrons

• 76 protons and 0 electrons

• 38 protons and 38 electrons

• 76 protons and 76 electrons

Multiple Choice

An atom has 10 protons and a mass number of 18. It has __ neutrons

• 10

• 18

• 28

• 8

Multiple Choice

How many protons are in this element? (they are the orange balls)

• 4

• 8

• 2

• 3

Multiple Choice

Isotopes are atoms of the same element that have the same number of __________ but different number of __________ . Therefore, isotopes of the same element have different masses. 

• protons, neutrons
• protons, electrons
• neutrons, protons
• electrons, protons

Multiple Choice

Isotopes are atoms of the same element that have the same number of __________ but different number of __________ . Therefore, isotopes of the same element have different masses.

• protons, neutrons

• protons, electrons

• neutrons, protons

• electrons, protons