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18 Cards in this Set
- Front
- Back
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What is anything that has mass and takes up space?
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Matter
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What is the ability to cause change by holding matter together or by breaking it apart?
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Energy
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What is the smallest unit of matter?
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An atom
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What are two characteristics of elements?
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A substance is made up of only one type of atom.
Elements cannot be broken down into any other substance. |
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What are the elements designated by SPONCH?
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Sulfur, phosphorus, oxygen, nitrogen, carbon, and hydrogen.
99% of all life contains these elements. |
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What is a compound?
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A compound always contain two or more elements.
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What are the two types of compounds?
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Inorganic compounds do not contain carbon.
Organic compounds always contain carbon. |
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What is a mixture?
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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. |
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What is a solution?
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A solution is a mixture of two or more substances mixed evenly.
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What is the most important inorganic compound?
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Water is the most important inorganic compound. Our bodies are made up of over 65% water.
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What are two types of passive transport?
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Diffusion and osmosis
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What is diffusion?
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Materials move from high concentrations to low concentrations
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What is osmosis?
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When water moves from high concentration to low concentration.
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What are two forms of active transport?
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Endocytosis and exocytosis
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What is active transport?
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When the cell spends energy to bring materials inside the cell.
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What is the process by which a cell takes in a substance by surrounding it with the cell membrane?
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Endocytosis
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What is the process by which a cell gets rid of substances from the cell?
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Exocytosis
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What is the ability for organisms to keep conditions inside the body the same?
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Homeostasis
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