8th grade Chemistry

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 does it mean for a material to be malleable?

Back

Malleability is the ability of a material to be pounded or pressed into various shapes without breaking.

Front

What is a proton?

Back

A proton is a subatomic particle found in the nucleus of every atom, carrying a positive electrical charge.

Front

What is corrosion?

Back

Corrosion is the process by which a material deteriorates due to oxidation, forming oxides that flake away.

Front

What is luster in terms of materials?

Back

Luster refers to a soft sheen, glossy surface, or brightness of a material.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom that has no electrical charge.

Front

What is the definition of a chemical symbol?

Back

A chemical symbol is a one or two-letter notation used to represent an element on the periodic table.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus of an atom.

Front

What is ductility?

Back

Ductility is the ability of a material to be stretched into a wire without breaking.