Basic Chemistry Flashcard 1 9th Grade

Front

What is a single bond in chemistry?

Back

A single bond is a type of chemical bond where two atoms share one pair of electrons.

Front

How many different kinds of atoms are found naturally on Earth?

Back

About 90 different kinds of atoms.

Front

What are atoms?

Back

Atoms are the basic units of matter and the defining structure of elements.

Front

Can different types of atoms make different numbers of bonds?

Back

True, different types of atoms can form different numbers of bonds based on their electron configurations.

Front

What is the space-filling model of a molecule?

Back

The space-filling model is a representation of a molecule that shows the relative sizes of the atoms and how they fill space.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is a compound?

Back

A compound is a substance formed when two or more different types of atoms bond together.

Front

What is the significance of chemical bonds?

Back

Chemical bonds hold atoms together in molecules and compounds, determining the structure and properties of substances.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons.