Atoms, Phases, Periodic Table Review 1

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

How many protons does an atom with an atomic number of 11 have?

Back

11 protons.

Front

What is the atomic mass of an atom with 6 protons and 6 neutrons?

Back

12 (the atomic mass is the sum of protons and neutrons).

Front

What type of matter has a definite shape?

Back

Solids have their own shape.

Front

What does the periodic table organize elements by?

Back

The number of protons in the nucleus.

Front

If an atom has 5 electrons and a mass of 10, how many neutrons does it have?

Back

5 neutrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the nucleus of an atom?

Back

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