10/22 HChem DQ

Which of the following will have a lower ionization energy than Scandium (Sc)?

• Helium (He)
• Titanium (Ti)
• Calcium (Ca)
• Magnesium (Mg)

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which atom has the largest atomic radius?

• potassium
• rubidium 
• francium
• cesium

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NGSS.HS-PS1-1

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.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Atoms that have a high electronegativity, _______________.

• give up their electrons more easily.
• hold on to their electrons more tightly.
• have more electron shells.

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does carbon have?

• 1
• 2
• 3
• 4

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NGSS.HS-PS1-1

What part of an atom is involved in chemical bonding?

• protons
• neutrons
• electrons
• nucleus

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

A ________ is a model of an atom in which each dot represents a valence electron.

• Valence electron
• Electron dot diagram/Lewis dot structure
• Lewis bond structure

Compounds made from only nonmetals are _________________ compounds.

• ionic
• covalent
• metallic
• chemical

Tags

NGSS.HS-PS1-1

The chemical formula of dinitrogen textroxide is

• Ni₂O₄
• NiO
• N₂O₄
• NiO₂

Tags

NGSS.MS-PS1-1