Chemistry and Matter Part 2

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.

Front

What is an electron?

Back

An electron is a subatomic particle that has a negative charge and is found outside the nucleus of an atom.

Front

How many valence electrons does sulfur (S) have?

Back

Sulfur has 6 valence electrons.

Front

What is a compound?

Back

A compound is a substance made up of atoms of two or more different elements joined by chemical bonds.

Front

What are valence electrons?

Back

Valence electrons are the electrons located in the outermost energy level of an atom.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, which can be of the same or different elements.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.