The Building Blocks of Matter Atoms Elements and Isotopes

The video tutorial explains the basic structure of atoms, including protons, neutrons, and electrons. It covers how atoms are identified by their protons and introduces atomic notation. The concept of isotopes is explained using carbon as an example, highlighting variations in neutron numbers. The tutorial also discusses atomic charge, explaining how atoms can become ions by losing or gaining electrons, and how this is represented in atomic notation.

What are the three main components of an atom?

• Protons, neutrons, and electrons

• Protons, neutrons, and molecules

• Neutrons, ions, and atoms

• Electrons, ions, and molecules

How is an element identified on the periodic table?

• By its electron configuration

• By its neutron count

• By a large letter or letters

• By its atomic mass

What defines an isotope of an element?

• Same number of neutrons, different electrons

• Same number of protons and neutrons

• Same number of protons, different neutrons

• Same number of electrons, different protons

Which of the following is a correct example of a carbon isotope?

• Carbon-15

• Carbon-10

• Carbon-16

• Carbon-12

What charge does a proton carry?

• Positive two

• Positive one

• Neutral

• Negative one

What happens to an atom when it loses an electron?

• It remains neutral

• It becomes a neutron

• It becomes a positive ion

• It becomes a negative ion

What is the charge of an atom with equal numbers of protons and electrons?

• Neutral

• Positive

• Variable

• Negative

If an oxygen atom gains an electron, what charge will it have?

• Plus two

• Neutral

• Minus one

• Plus one

How is an ion represented in atomic notation?

• By a subscript number

• By a prefix

• By a symbol to the top right

• By a different element symbol