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18 Cards in this Set

  • Front
  • Back
What is anything that has mass and takes up space?
What is the ability to cause change by holding matter together or by breaking it apart?
What is the smallest unit of matter?
An atom
What are two characteristics of elements?
A substance is made up of only one type of atom.

Elements cannot be broken down into any other substance.
What are the elements designated by SPONCH?
Sulfur, phosphorus, oxygen, nitrogen, carbon, and hydrogen.

99% of all life contains these elements.
What is a compound?
A compound always contain two or more elements.
What are the two types of compounds?
Inorganic compounds do not contain carbon.

Organic compounds always contain carbon.
What is a mixture?
A mixture is a combination of substances in which individual substances keep their own properties. No chemical reaction takes place.

Mixtures can be solids, liquids, or gases.
What is a solution?
A solution is a mixture of two or more substances mixed evenly.
What is the most important inorganic compound?
Water is the most important inorganic compound. Our bodies are made up of over 65% water.
What are two types of passive transport?
Diffusion and osmosis
What is diffusion?
Materials move from high concentrations to low concentrations
What is osmosis?
When water moves from high concentration to low concentration.
What are two forms of active transport?
Endocytosis and exocytosis
What is active transport?
When the cell spends energy to bring materials inside the cell.
What is the process by which a cell takes in a substance by surrounding it with the cell membrane?
What is the process by which a cell gets rid of substances from the cell?
What is the ability for organisms to keep conditions inside the body the same?