PROPERTIES OF MATTER VOCAB

MATTER

• Anything that takes up space and has mass. All matter is made up of atoms.

ATOM

• The smallest unit of a chemical element.

ELEMENT

• Each element is made of only one kind of atom. There about 120 elements. Examples: Hydrogen, Oxygen, Calcium, Carbon, etc.

PERIODIC TABLE

• A list of the chemical elements that exist in the universe (that have been discovered by humans so far). Organizes elements according to the properties of their atoms.

MOLECULE

• Formed when 2 or more atoms join together. These may be 2 of the same or 2 different atoms. Examples: Water, Salt, Oxygen, Sugar, Carbon Dioxide, etc.

COMPOUND

• Formed when 2 or more DIFFERENT atoms are joined together. All compounds are also molecules but not all molecules are compounds.

SUBSCRIPTS

• Tell you how many “atoms” of each element for that molecule. Example- H2= 2 Hydrogen Atoms.

COEFFICIENT

• Multiply the number of molecules you are making. Example- 2 H2O= 4 atoms hydrogen, 2 atoms oxygen because H2 x 2= H4 or 4 atoms of hydrogen, O x 2= O2 or 2 atoms oxygen.

PHOTOSYNTHESIS

• The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

CELLULAR RESPIRATION

• Cellular respiration is the process of breaking sugar into a form that the cell can use as energy. This happens in all forms of life. Cellular respiration takes in food and uses it to create ATP, a chemical which the cell uses for energy. Usually, this process uses oxygen, and is called aerobic respiration.

GLUCOSE

• A simple sugar that is an important energy source in living organisms and is a component of many carbohydrates.

CARBON DIOXIDE

• A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air

OXYGEN

• A colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.