2024-2025 Chemistry 1- Semester 1 Final

Front

A covalent bond forms when atoms ___________ electrons.

Back

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Front

Which statement about covalent bonds is true?

Back

Covalent bonds are usually weaker than ionic bonds because they do not have positive and negative charged elements, instead they share electrons to fill the outer shell.

Front

Which category of elements usually form negative ions?

Back

nonmetals

Front

The branch of science that deals with substances containing carbon is called…

Back

organic chemistry

Front

What is the correct Lewis Dot Structure for ammonia NH3?

Back

The Lewis Dot Structure for ammonia (NH3) shows nitrogen in the center with three hydrogen atoms bonded to it, and a lone pair of electrons on nitrogen.

Front

What is the definition of ionic bond?

Back

An ionic bond is a chemical bond formed between two ions with opposite charges, typically between a metal and a nonmetal.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.

Front

What is the difference between an ionic bond and a covalent bond?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of covalent bond where electrons are shared unequally between two atoms, resulting in a molecule with a slight charge.