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Chemistry Part 1
| Question | Answer |
|---|---|
| What are all things (matter) made up of? | Atoms |
| What subatomic particle is negatively charged and is found outside the nucleus of an atom? | Electron |
| What subatomic particle is positively charged and is found inside the nucleus? | Proton |
| What subatomic particle has no charge (is neutral) and is found inside the nucleus? | Neutron |
| What is an element made of? | 1 type of atom |
| What is a molecule? | Atoms of the same element bonded together (EX: Oxygen - O2) |
| What is a compound? | An element made up of two or more elements that combine CHEMICALLY (EX: Water - H2O, Carbon Dioxide - CO2) |
| What is a mixture? | Can be a gas, liquid or solid and is made of substances that combine PHYSICALLY (EX: sand and baking soda) |
| What is a solution? | Two or more substances that mix EVENLY (EX: Saline solution - water and salt) |
| What is a suspension? | A gas or a liquid that has another substance that is not mixed evenly throughout it -- may see particles floating in it or sinking to the bottom. (EX: Blood - red and white blood cells and platelets do not mix evenly, Oil and water) |
| Why does blood stay together in the body if it is a suspension? | The heart keeps the blood flowing and the blood cells suspended |
| True or False: Inorganic compounds contain carbon. | False - Inorganic compounds DO NOT contain carbon (EX: Water - H2O) |
| True or False: Living things are made up of more than 50% water. | True |
| True or False: Water is needed for chemical reactions to occur. | True |
| True or False: Water is NOT used to transport materials through organisms. | False - water IS used to transport materials |
| What is an organic compound? | A compound that contains Carbon. |
| True or False: Organic compounds are associated with living or once living organisms. | True |
| What do carbohydrates do? | Supply energy for cell processes (EX: Sugars and starches) |
| What is a lipid and where is it found? | Fat or oil that DOES NOT mix with water - they are found in the cell membrane - they are selectively permeable |
| Which releases a larger amount of energy? Lipid or Carbohydrates | Lipids - they are harder for the body to break down than carbohydrates |
| What are proteins made up of? | Amino Acids (organic compounds) |
| What is a body part that is made up of proteins? | Muscle tissue |
| What are enzymes made up of? | Proteins |
| True of False: Enzymes regulate all chemical reactions within the cell. | True |
| What do nucleic acids store? | They store coded information for cells (EX: DNA) |
| What directs the activities of the cells? | DNA (Deoxyribonucleic Acid) |
Created by:
lmiller1319
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