Front

What is a full valence shell?

Back

A full valence shell is when an atom has the maximum number of electrons in its outermost shell, typically 8 for most elements, which makes it stable and less reactive.

Front

What is the difference between an element and a compound?

Back

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

Front

Back

Front

What is the formula to calculate acceleration?

Back

Front

What is the unit of force in the International System of Units (SI)?

Back

The unit of force in the SI system is the Newton (N).

Front

Which subatomic particle has a positive charge?

Back

The proton is the subatomic particle that has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge; it is neutral.

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in an atom's nucleus and determines the element's identity.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What is a chemical reaction?

Back

A chemical reaction is a process where reactants are transformed into products through the breaking and forming of chemical bonds.