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Phys. Sci. stuff
| Question | Answer |
|---|---|
| Where are transition metals located on the periodic table? | In the middle and bottom |
| Where are the least reactive elements on the periodic table? | The far right |
| Where are the most reactive elements on the periodic table? | The far left |
| Where are the metalloids on the periodic table? | The right, there tends to be a line seperating them |
| Where are the nonmetals on the periodic table? | The upper right and Hydrogen |
| Where are the metals on the periodic table? | Left of metalloid line |
| What is the smallest part of an element? | An atom |
| What is the smallest part of a compound? | A molecule |
| What does a period represent? | Energy levels, rows |
| What does a group represent? | # Valence electrons, AKA family, column |
| What is the definition of mass? | The amount of matter in an object |
| What is the Law of Conservation of Matter? | Matter can be neither created nor destroyed |
| What is the definition of density? | How tightly packed an object is |
| What is the formula for density? | P=M/V, usually g/mL |
| What are the types of physical properties? | boiling point, melting point, color, shape, etc. |
| What are the types of chemical properties? | Toxicity, combustibility, reactivity |
| What is the definition of melting point? | The point at which a substance melts, same temp. as freezing point |
| What is the definition of combustibility? | The ease to set a substance on fire |
| What is the definition of reactivity? | How easily a substance will react with another substance |
| What is the definition of boiling point? | The point at which a substance boils |
| What is a solute? | The substance dissolved in a solution |
| What is a solvent? | The substance that dissolves other substances in a solution |
| What is a solution? | A combination of a solvent and a solute |
| What is a homogenous mixture? | A mixture made up of the same substance, pure substance |
| What is a heterogeneous mixture? | A mixture made up of multiple different substances, easily seperated |
| What does the atomic number represent? | The number of protons in an atom, usually number of electrons |
| What does the atomic mass represent? | The mass of a single atom of a substance, roughly equivalent to number of protons and neutrons |
| What is a noble gas? | A highly unreactive gas, located on far right of periodic table |
| How do you find the number of neutrons? | Subtract the atomic number from the mass number |
| What are reactants and products? | A reactant is the substance that reacts in a chemical reaction, the product is the end result of that reaction, reactants on left, products on right |
Created by:
Kaleb ev
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