12-12

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is an alloy?

Back

An alloy is a mixture of two or more elements, at least one of which is a metal, that has metallic properties.

Front

What does it mean for an ion to have a 3- charge?

Back

An ion with a 3- charge has gained 3 electrons, resulting in a negative charge.

Front

What is the chemical formula for strontium oxide?

Back

The chemical formula for strontium oxide is SrO.

Front

What is the significance of the element symbol in chemistry?

Back

Element symbols are one or two-letter abbreviations used to represent chemical elements on the periodic table.

Front

How do you determine the number of electrons in a neutral atom?

Back

In a neutral atom, the number of electrons is equal to the number of protons, which is the atomic number.

Front

What is the difference between an ion and a neutral atom?

Back

An ion is an atom that has gained or lost electrons, resulting in a charge, while a neutral atom has an equal number of protons and electrons.

Front

What is the name of the element with the symbol 'Li'?

Back

The element with the symbol 'Li' is Lithium.

Front

What happens to an atom when it loses electrons?

Back

When an atom loses electrons, it becomes a positively charged ion, known as a cation.

Front

What is the name for a mixture of metals?

Back

A mixture of metals is called an alloy.