Atom and the Element Box (CFA practice)

In an element box, the number at top is the

• atomic number

• atomic name

• atomic mass

• atomic symbol

The number of neutrons in an atom can be found by

• adding the number of neutrons and protons together.

• adding the atomic mass and the atomic number.

• subtratcting the atomic number from the atomic mass.

• subtracting the atomic mass from the atomic number.

___________________ are positively charged particles located in the nucleus of an atom.

• Electrons

• Neutrons

• Protons

• Isotopes

Isotopes are atoms of the same element with different numbers of

• electrons

• neutrons

• protons

• nuclei

Elements on the Periodic Table are ordered according to their

• element name

• element symbol

• number of atoms

• atomic number

The nucleus of an atom is located in its

• electron cloud

• center

• proton

• backpack

The smallest particle of an element that has the same chemical properties of the element is

• a molecule of that element.

• an atom of that element.

• a proton of that element.

• the nucleus of the element.

Protons have a ____________ charge, neutrons have a ____________ charge, and electrons have a ____________ charge.

• positive; negative, neutral

• positive, neutral, negative

• neutral, negative, positive

• negative, neutral, positive

The history of the Atomic Theory involves many changes from its early form. Theories change because

• people decide to no longer agree with them.

• all theories must be changed after a certain time.

• new evidence is found that allows the theory to be changed.

• when scientists die, their theories are always changed.

The chemical symbol in this element box is

• 26

• Fe

• Iron

• 55.845