Unit 3 Chem

In chemical compounds, covalent bonds form when?

• the electronegativity difference between two atoms is very large.

• electrons are completely transferred between two metals.

• pairs of electrons are shared between two nonmetal atoms.

• two nonmetal atoms are attracted to each other by opposite charges.

What is the octet rule?

• Elements can only have 8 electrons in its outermost shell
• The elements must form an octopus like structure
• Is the outermost electrons
• Elements can only have 6 electrons in its outermost shell

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How many electrons should Oxygen have around its Lewis dot model?

• 5
• 6
• 7
• 8

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What elements generally make an ionic bond?

• metal and nonmetal
• 2 or more nonmetals
• metal
• none of the above

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What elements generally make a covalent bond?

• metal and nonmetal
• 2 or more nonmetals
• metal
• none of the above

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In chemical compounds, covalent bonds form when

• the electronegativity difference between two atoms is very large.
• electrons are completely transferred between two metals.
• pairs of electrons are shared between two nonmetal atoms.
• two nonmetal atoms are attracted to each other by opposite charges.

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What is a valence electron?

• an electron that is found in the outermost shell of an atom. 
• an electron found in the innermost shell of an atom.
• an electron found in the middle shell.

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What are valence electrons?

• The innermost electrons
• The outermost electrons
• The bonds between two atoms
• When electrons are balanced

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How many valence electrons does Carbon have

• 1
• 5
• 8
• 4

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Which of the elements in the picture has correct electron dot notation?

• 1

• 2

• 3

• 4

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