Parts of the Atom (Notes 1/5)

Multiple Choice

Where is most of the mass of an atom located?

• In the nucleus

• In the electron cloud

• Evenly distributed throughout the atom

• In the empty space

Multiple Choice

Which subatomic particle is found outside the nucleus?

• Electron

• Proton

• Neutron

• Both proton and neutron

Multiple Choice

If an atom has more electrons than protons, what is the charge of the resulting ion?

• Positive

• Negative

• Neutral

• It depends on the number of neutrons

Multiple Select

Which of the following statements about subatomic particles are correct?

• Protons have a positive charge.

• Neutrons are electrically neutral.

• Electrons have a negative charge.

• Protons have a negative charge.

Multiple Choice

What is the atomic number of lithium as shown in the diagram?

• 3

• 7

• 6

• 12

Open Ended

Explain the difference between atomic number and mass number using examples from the periodic table.

Open Ended

Describe how you would use the periodic table to determine whether an element is a metal, nonmetal, or semimetal.

Multiple Choice

Which of the following statements best explains why the atomic weight of an element is not always a whole number?

• Because atomic weight is the sum of protons and electrons.

• Because elements can have isotopes with different numbers of neutrons.

• Because atomic weight is the same as atomic number.

• Because elements can lose or gain electrons.

Multiple Select

Which of the following are true about isotopes?

• They have the same number of protons.

• They have different numbers of neutrons.

• They have different atomic numbers.

• They have the same chemical properties.

Open Ended

Explain how changing the number of protons in an atom affects the identity of the element. Provide an example using the periodic table.

Open Ended

Explain why only electrons can be gained or lost when an atom becomes an ion.

Multiple Choice

What determines the chemical properties of an atom?

• The number of valence electrons

• The number of protons

• The number of neutrons

• The atomic mass

Multiple Select

Which of the following statements about valence electrons and electron shells are correct?

• Valence electrons are found in the outermost shell.

• A full shell makes an atom stable.

• Shell 2 can hold up to 8 electrons.

• All electrons in an atom are valence electrons.

Multiple Choice

Which of the following statements best describes the relationship between matter and atoms?

• Atoms are made up of matter.

• Matter is composed of atoms.

• Atoms and matter are unrelated.

• Matter is smaller than atoms.