Unit 1 Chemistry of Life

Activation Energy

Energy needed to start a reaction

Amino Acid

Building blocks of proteins

Atom

Smallest unit of a element

Attraction

Pull toward something

Carbohydrate

Nutrient made of carbon, hydrognen and oxygen that gives body energy

Catalyst

Substance that speeds up a reaction

Chemical change

Change that makes a new substance

Compound

Substance made of two or more elements

Concentration

Amount of solute in a certain amount of solution

Conservation of Mass

Matter is not created or destroyed in a chemical reaction

Disaccharide

Sugar made of two simple sugars

Energy

Ability to do work

Enzyme

Protein that speeds up a reaction

Fatty Acid

Long carbon chain found in fats

Heat

Energy transferred from warmer matter to cooler matter

Mass

Amount of matter in an object

Matter

Anything that has mass and takes up space

Molecule

Two or more atoms bonded together

Monomer

Small molecule that joins with others to make a polymer

Monosaccharide

One simple sugar like glucose

Nucleotide

Building block of DNA and RNA

pH

Measure of how acidic or basic something is

Phospholipid

Molecule that makes up cell membranes with a water-loving head and water-repelling tails

Physical change

Change in form without making a new substance

Polymer

Large molecule made of many simple sugars

Potential Energy

Stored Energy

Rate of reaction

How fast a reaction happens

Solubility

Ability to dissolve

Solute

Substance that gets dissolved

Solvent

Substance that dissolves another substance

Steroid

Lipid with four joined carbon rings

Temperature

How hot or cold something is

Triglyceride

Fat made of glycerol and three fatty acids

Van der waals force

Weak attraction between nearby molecules