Unit 1- Atoms & Elements

Front

What is an atom?

Back

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

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

Where are protons located in an atom?

Back

Protons are located in the nucleus of an atom.

Front

What is the charge of a neutron?

Back

Neutrons have no charge; they are neutral.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

How is the periodic table organized?

Back

The periodic table is organized by increasing atomic number and groups elements with similar properties.

Front

What is a chemical element?

Back

A chemical element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What does the term 'isotope' mean?

Back

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.

Front

What is the significance of the group number in the periodic table?

Back

The group number indicates the number of valence electrons in the elements of that group.

Front

What is the difference between a metal and a non-metal?

Back

Metals are typically shiny, conductive, and malleable, while non-metals are dull, insulative, and brittle.