Unit 4 Review

As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.
• The atoms have more protons.
• The atoms have more energy levels
• The atoms have more nuetrons

Tags

NGSS.HS-PS1-1

As you move across the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.
• the atoms have less mass
• the atoms have more protons.
• the atoms have less electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Metals are good conductors of heat and electricity.

• true
• false

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

The atom with the largest atomic radius in Group 18 is - 

• Ar
• He
• Kr
• Rn

Tags

NGSS.HS-PS1-1

Which statement correctly and completely identifies a trend?

• Atomic radius decreases across a period and increases down a group.

• Electronegativity decreases across a period and decreases down a group.

• Ionization energy increases across a period and increases down a group.

• Ionic radius increases across a period and increases down a group.

Tags

NGSS.HS-PS1-1

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An atom gain electron

• Cation

• Anion

• Positive ion

• Isotope

when atom gain an electron (negative) the size of atom

• Increase

• Decrease

• No change

• Small

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals
• alkaline earth metals
• halogens
• noble gases

What period is Lead (Pb) in?

• 6

• 4

• Metals

• 4A

Tags

NGSS.HS-PS1-1

What are valence electrons?

• Any of an atom's electrons

• Electrons located on the first energy level

• Electrons not attached to any atom

• electrons located on the outer energy level

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2