Atoms & Periodic Table Test

How many electrons does a neutral atom of Iodine have?

• 53

• 126

• 73

• 179

In an element box, the number at top is the

• atomic number

• atomic name

• atomic mass

• atomic symbol

Tags

NGSS.MS-PS1-1

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.

Tags

NGSS.MS-PS1-1

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

• Electrons

• Neutrons

• Protons

• Isotopes

Tags

NGSS.MS-PS1-1

Elements on the Periodic Table are ordered according to their

• element name

• element symbol

• number of atoms

• atomic number

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

Tags

NGSS.MS-PS1-1

The three kinds of elements are

• metals, nonmetals, and liquid metals

• metals, nonmetals, and metalloids

• metals, solids, and liquids

• metalloids, asteroids, and nonmetals

This subatomic particle always identifies the identity (name) of the element

• Neutron
• Electron
• Proton
• amu

The chart that shows the arrangement of elements in order by their atomic number

• Electron Cloud
• Periodic Table
• amu
• Atomic Mass