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Phys. Sci. stuff

QuestionAnswer
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