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Chemisty Part 1-2011
First part of Chemistry Chapter 3
| Question | Answer |
|---|---|
| makes up matter | atom |
| found outside the nucleus | electrons |
| have a negative charge | electrons |
| found inside the nucleus | protons |
| have a positive charge | protons |
| found inside the the nucleus | neutrons |
| do not have a charge | neutrons |
| made up of one type of atom | element |
| O2 is an example of this | element |
| atoms of the same element are bonded together | molecules |
| O2 is an example of this type of element | molecule |
| made up of two or more different elements that combine chemically. ex) H2O, CO2 | compound |
| made of substances that combine physically | mixture |
| sand and baking soda; chocolate chip ice cream are examples | mixture |
| two or more substances are mixed evenly | solution |
| saline is an example of this | solution |
| gas or liquid has another substance evenly spread throughout it | suspension |
| in this mixture, particles can sink to the bottom | suspension |
| blood is an example of this. The parts of blood: red blood cells, white blood cells, platelets. They stay together b/c the heart keeps pumping and keeps the blood flowing | suspension |
| oil and water are also an example of this type of mixture | suspension |
| made from elements other than carbon | inorganic compounds |
| The three reasons water is important | 1) living things are made of 50% water 2) it is needed for chemical reactions to occur 3) it is used to transport materials through organisms. |
| contain carbon; | organic compound |
| found in all living or once living organisms | carbon |
| where organisms get the most useable energy needed by their cells | carbohydrates |
| sugards, starches | carbohydrates |
| fats and oils; do not mix with water | lipids |
| release a larger amount of energy than carbohydrates BUT they are harder to break down so we still get more of the energy we use from carbs and not these | lipids |
| found in cell membrane; make the cell membrane selectively permeable b/c _______ do not mix wirh water | lipids |
| made up of amino acids | proteins |
| these combine to make structures like muscles | proteins |
| ______________ are made up of proteins | enzymes |
| help regulate all the chemical reactions in a cell | enzymes |
| these store coded information for cells | nucleic acids |
| DNA | deoxyribonucleic acid |
| DNA | directs the activities of the cell; |
Created by:
rfabish
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