Tek 8.5a

The atomic number of an atom is determined by the number of --

• Protons in the atom's nucleus

• Neutrons in the atom's nucleus

• Electrons in the atom's electron cloud

• Protons and neutrons in the atom's nucleus

Elements in the same period/row have the same--

• # of valence electrons

• # of protons

• # of energy shells

• # of neutrons

The mass of the atom is located ---

• in the Nucleus

• in the Electron Cloud

• protons only

• neutrons only

The volume of the atom is located in the --

• in the Nucleus

• in the Electron Cloud

List the steps of the scientific method

d

e

f

c

b

a

Draw conclusions

Form a hypothesis

Analyze results

Communicate results

Ask a question

Conduct experiment

The atoms of a certain element each contain 18 protons and 8 valence electrons.

What is the element's name?

• Argon

• Krypton

• Neon

• Sodium

Tags

NGSS.MS-PS1-1

What element has similar properties of Cesium (Cs), but a larger atomic mass?

• Magnesium (Mg)

• Barium (Ba)

• Rubidium (Rb)

• Francium (Fr)

Elements in the same group/family--

• have the same # of valence

• behave the same

• have the same # of energy shells

• are in the same period

How many neutrons will the element in Group 2A, Period 2 have?

• 2

• 3

• 5

• 6

How many neutrons will an atom of Calcium (Ca) have?

• 10

• 14

• 16

• 20

Tags

NGSS.MS-PS1-1