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Chemistry Test
| Question | Answer |
|---|---|
| atomic number | The number of protons in an atom |
| symbol | The letters that represent an element. The first letter is always capital. If there is a second letter it is a lower case. |
| element name | The name of the element |
| atomic mass | the weight of the protons and neutrons because they are big and so that means they are heavy |
| oribital | These are the energy levels or rings around the atoms where you can find electrons |
| electrons | negatively charged, found in the energy levels, very tiny, move fast |
| nuetrons | found in the nucleus of the atom |
| protons | positive charge |
| Alkali Metals | Group 1, very reactive, give away one electron |
| Alkaline Earth Metals | Group 2, second most reactive, give away two electrons |
| Transition Metals | Group 3-12, Good Conductors of heat and electricity |
| Lanthanide Series | Period 6 at the bottom of the table |
| Actinide Series | Period 7 at the bottom of the table |
| Nobel Gases | Not reactive, they have 8 valence electrons already and do not like to combine. They are stable |
| Mixed Group metals | Group 13-16 This group includes metals, metalloids, and non metals. |
| Physical Change | Atoms do not rearrange. Examples include, color change, odor, taste, density, mass, hardness, boiling point, melting point |
| Chemical Change/Reacion | Atoms rearrange, a different substance is produced, Energy is required |
| Reactants | The left side of the equation |
| Products | The right side of the equation |
| Compound | Two or more elements |
| Molecule | Two or more elements. All compounds are molecules but not all molecules are compounds |
| Law of Conservation of Matter | Atoms are not created or destroyed only rearranged during a chemical reaction |
| Endothermic | absorbs energy and the reaction feels cold |
| Exothermic | releases energy and the reaction feels hot |
| The periodic table is arranged by______________? | Atomic number |
| How many electrons fit on the first energy level | 2 |
| How many electrons fit on the second energy level | 8 |
| How many electrons fit on the third energy level | 8-32 |
| Name three chemical reactions | Gas production, temperature change, color change reaction |
| Name the three parts of an atom | protons neutrons and electrons |
| The electrical charge for a proton | positive |
| The electrical charge for a nuetron | neutral |
| The electrical charge for an electron | negative |
| Where are the protons and neutrons found | in the nucleus |
| Where are the electrons located | energy levels, orbitals, shells |
| How do you calculate neutrons? | Subtract the atomic mass - the atomic number |
| How do you know how many electrons in an atom | Its the same as the number of protons or the atomic number |
| Is the atomic mass a decimal number or a whole number | decimal number |
| The name of HCl | Hydrogen Cloride |
| Why is carbon important | it has 4 valance electrons It can bond in many ways like rings, branches, and linearly |
| Carbohydrates | they are energy |
| Lipids | they are fats |
| Proteins | They are meats |
| DNA/RNA | Genetic make up |
Created by:
uclabruin03
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