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BEMS-ScienceChem
| Question | Answer |
|---|---|
| Small particle that is the building block of all matter | Atom |
| Substance that consists of only one type of atom | Element |
| Positively charged particle in the nucleus of the atom | Proton |
| Neutrally charged particle in the nucleus of the atom | Neutron |
| Negatively charged particle that occupies the space in an atom outside the nucleus | Electron |
| An atom that is no longer neutral because it has lost or gained valence electrons | Ions |
| Atoms of the same element that have different numbers of neutrons | Isotope |
| Substance containing atoms of two or more different elements chemically bonded together | Compound |
| Made of 2 parts - A solvent and one ore more solutes | Solution |
| Matter with a composition that is always the same | Substance |
| 2 or more atoms that are held together by covalent bonds and act as a unit | Molecule |
| Matter that can vary in composition | Mixture |
| Mixture in which 2 ore more substances are evenly mixed by not bonded together | Homogenous mixture |
| Mixture in which substances are not evenly mixed | Heterogeneous mixture |
| a chart of the element arrangements into rows and columns according to their physical and chemical properties | Periodic |
| Approximately how many elements are metals? | 3/4 |
| Approximately how many elements are metalloids? | 1/8 |
| Approximately how many elements are non-metals? | 1/8 |
| When Mendeleev developed the first periodic table, how many elements were known? | 60 |
| How are elements organized on the modern periodic table? | Columns - rows and blocks basec on certain patterns of properties |
| A column on the periodic table having the same chemical properties and react in similar ways | Group or family |
| Rows on table - atomic number increases left to right | Period |
| Where is Alkali found on the periodic table? | Column 1 |
| Where is Alkaline on the periodic table? | Column 2 |
| Where is Halogens on the periodic table? | Column 17 |
| Where are Noble Gases on the periodic table? | Column 18 |
| Where are transition elements found on the periodic table? | Columns 3-12 |
| Name some properties of Metals? | Shiny - Easily pulled into wire or hammered into sheets - Good conductor of electricity and thermal energy |
| What are some properties of Non Metals? | Has no metallic properties - Bad conductor of electricity and thermal energy |
| What are some properties of Metalloids? | Like metals and non metal physically and chemically - Semiconductor of electricity - in high temps it acts like metal - in low temps it acts as non metal |
| Hydrogen symbol | H |
| Lithium symbol | Li |
| Beryllium symbol | Be |
| Sodium symbol | Na |
| Magnesium symbol | Mg |
| Potassium symbol | K |
| Calcium symbol | Ca |
| Iron symbol | Fe |
| Nickel symbol | Ni |
| Copper symbol | Cu |
| Silver symbol | Ag |
| Gold symbol | Au |
| Zinc symbol | Zn |
| Mercury symbol | Hg |
| Boron symbol | B |
| Carbon symbol | C |
| Aluminum symbol | Al |
| Silicon symbol | Si |
| Tin symbol | Sn |
| Lead symbol | Pb |
| Nitrogen symbol | N |
| Phosphorous symbol | P |
| Oxygen symbol | O |
| Fluorine symbol | F |
| Sulfur symbol | S |
| Chlorine symbol | Cl |
| Argon symbol | Ar |
| Neon symbol | Ne |
| Helium symbol | He |
| Iodine symbol | I |
Created by:
indycreed
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