Water and Chemistry of Life

Front

What is an ion?

Back

An atom that has an overall electrical charge.

Front

What type of bond holds atoms together in molecules?

Back

Covalent bond.

Front

How many unique elements have scientists discovered to date?

Back

118.

Front

What is the chemical symbol for chlorine?

Back

Cl.

Front

What charge does a proton carry?

Back

Positive.

Front

What is a covalent bond?

Back

A type of chemical bond where atoms share pairs of electrons.

Front

What is the role of water in biological systems?

Back

Water acts as a solvent, temperature regulator, and is essential for biochemical reactions.

Front

What is the pH scale?

Back

A scale that measures how acidic or basic a solution is, ranging from 0 to 14.

Front

What is a hydrogen bond?

Back

A weak bond between a hydrogen atom and an electronegative atom.

Front

What is the difference between an ionic bond and a covalent bond?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve sharing electrons.