Atomic Structure & Masses

Atomic Structure & Masses

Look for the YELLOW text to know what should be filled in on your notes sheet.

Multiple Choice

The nucleus contains _____.

• only protons

• only electrons

• only neutrons

• protons & neutrons

Multiple Choice

An electron has a _____ charge.

• positive

• negative

• neutral

Multiple Choice

True or False:

It is possible for an element to have only one letter for its symbol.

• True

• False

Multiple Choice

The overall charge of the nucleus is _____.

• positive

• negative

• neutral

Multiple Choice

Which subatomic particles have almost no mass at all?

• protons

• electrons

• neutrons

Multiple Choice

Which subatomic particle tell us the identity of the element?

• proton

• electron

• neutron

Multiple Choice

Where can most of the mass of the atom be found?

• in the electron cloud

• in the nucleus

• in isotopes

Multiple Choice

Isotopes are atoms of the same element, but they just have a different number of _____.

• protons

• electrons

• neutrons

Multiple Choice

The atomic number of an element tells us _____.

• only the number of protons

• both the number of protons and the number of electrons

• only the number of neutrons

Multiple Choice

How do you find the number of neutrons in an atom?

• atomic mass - # of protons

• atomic mass + atomic number

• atomic number - # of electrons

Multiple Choice

For any element, the atomic number is the same as the number of protons, AND it's the same as the number of _____.

• neutrons

• electrons

• quarks