Ionic and Covalent Compounds and Bonds

In a covalent bond, one or more electrons are? 

• shared 
• lost 
• gained 
• transferred 

How many valence electrons does calcium have?

• 2
• 4
• 6
• 7

Tags

NGSS.HS-PS1-1

What is the charge on a chloride ion?

• -1
• 1
• +2
• +1

What is the charge on a Hydrogen ion?

• +1
• 1
• 2

In the chemical formula for an ionic compound, which item is written first?

• positive ion
• negative ion
• subscript
• the female

Ionic bonds form between metals and ____.

• metalloids
• metals
• nonmetals

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

Ionic compounds are formed when one or more valence electrons are transferred from _____

• a nonmetal atom to a metal atom
• a nonmetal atom to a nonmetal atom
• a metal atom to a nonmetal atom
• a metal atom to a metal atom

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

If an atom has no charge, which of the following must be true?

• It has more neutrons than protons or electrons.

• There are only neutrons inside the atom.

• Its number of protons is equal to its number of electrons.

• The neutrons in the atom outnumber the electrons and protons.

Tags

NGSS.HS-PS1-7