Ch 2 - The Chemistry of Life

Front

All matter is composed of: atoms, cells, carbon, hydrogen

Back

atoms

Front

The periodic table displays ____, arranged by their atomic number.

Back

elements

Front

H2O is an example of a(n): element, subatomic particle, atom, compound

Back

compound

Front

Which particles are found within the nucleus of an atom? Options: protons and electrons, protons and neutrons, electrons and neutrons, protons, electrons, and neutrons

Back

protons and neutrons

Front

What is responsible for the “stickiness” of water that results in cohesion and adhesion?

Back

hydrogen bonds

Front

Which property of water explains why ice floats? Options: hydrogen bonds, van der Waals forces, adhesion, solvent property

Back

hydrogen bonds

Front

A water strider can move across the surface of water due to what property of water? (adhesion, cohesion, polarity, heat capacity)

Back

cohesion

Front

Most enzymes found in the body work best at about 40 degrees. This represents the enzyme’s:

Back

optimal temperature

Front

Substances that speed up chemical reactions in the body are called:

Back

enzymes

Front

Which macromolecule is made from repeating units of sugar, like glucose? Options: lipids, carbohydrates, proteins, nucleic acids

Back

carbohydrates