17h) TEST - Atoms

Front

What charge do protons have?

Back

Positive

Front

Describe the nucleus of an atom.

Back

The nucleus of an atom is dense and positively charged.

Front

What charge does an atom have if it gains an electron?

Back

Negative (-)

Front

What are the characteristics of Group 17 elements?

Back

Group 17 elements are all nonmetals, very reactive, poor conductors of heat and electricity, tend to form salts with metals, and have 7 valence electrons.

Front

What is the atomic weight/mass of an atom with 11 protons, 10 neutrons, and 11 electrons?

Back

21

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What is the charge of an electron?

Back

Negative.

Front

What is an atom?

Back

An atom is the basic unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What is the significance of valence electrons?

Back

Valence electrons determine how an atom can bond with other atoms.

Front

What is the difference between an element and a compound?

Back

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