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matter

Where are transition metals located on the periodic table? the middle and bottom of the periodic table
Where are the least reactive elements on the periodic table? Far right
Where are the most reactive elements on the periodic table? Far left
Where are the metalloids on the periodic table? On the zigzag/staircase on the right side of the periodic table
Where are the nonmetals on the periodic table? upper right plus Hydrogen
Where are the metals on the periodic table? Left of the periodic table (including transition metals)
What is the smallest part of an element? atom
What does a period represent? the rows on the periodic table. the elements in the same row means they have the same number of electron shells (levels).
What does a group represent? the columns on the periodic table. the elements that are in the same column mean they have the same number of valence electrons. also called a family
What is the definition of mass? the amount of matter in an object
What is the Law of Conservation of Matter? Matter cannot be created or destroyed
What is the definition of density? How tightly packed something is
What is the formula for density? D=m/v (g/mL)
What are the types of physical properties? color, phase of matter, mass, density, odor, melting pt, boiling pt solubility, conductivity, luster, hardness
What are the types of chemical properties? flammability, toxicity, reactivity,
What is the definition of melting point? The point at which a solid turns into a liquid; same temp as the freezing point
What is the definition of combustibility? How easy an object can set on fire
What is the definition of reactivity? how easy an atom has a chemical reaction with another element
What is the definition of boiling point? the point at which as liquid turns into gas
What is a solute? the dissolver in another substance
What is a solvent? the substance that dissolves the solute
What is a solution? a well mixed mixture, a solute dissolved in a solvent, all parts are the same
What is a homogenous mixture? the type of mixture that you can't separate back into its original parts, pure substance, the same
What is a heterogeneous mixture? a mixture where you call see the separate components and you can separate them back the original components, parts aren't the same
What does the atomic number represent? # of protons
What does the atomic mass represent? # of protons + neutrons
What is a noble gas? unreactive elements, far right, least reactive
How do you find the number of neutrons? round the atomic mass to the nearest whole number (mass number), and then subtract the atomic mass from this number
What are reactants and products? reactants are the substances you have at the beginning (what is added together) products are the new substances you have after the reactions. usually reactants are on the left, products are on the left.
what is the smallest part of a compound molecule
Created by: Bwyanna