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Matter

matter

QuestionAnswer
Where are transition metals located on the periodic table? in the middle and on the 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? On the zigzag
Where are the nonmetals on the periodic table? upper right hand
Where are the metals on the periodic table? on the left of the zigzag
What is the smallest part of an element? atom
What is the smallest part of a compound? molecule
What does a period represent? energy levels; rows
What does a group represent? number of valence electrons(also called families); columns
What is the definition of mass? amount of matter in an object
What is the Law of Conservation of Matter? matter cannot be created nor destroyed
What is the definition of density? how tightly packed something is
What is the formula for density? mass/volume (usually shows up as g/mL)
What are the types of physical properties? color, odor, size, hardness, and temperature, luster, phase of matter, density, solubility, boiling point, melting point, conductivity, and mass.
What are the types of chemical properties? reactivity, toxicity, combustibility.
What is the definition of melting point? when a solid melts; same temp as the freezing point
What is the definition of combustibility? how easily a substance burns; flammability
What is the definition of reactivity? how easily an atom reacts with something else
What is the definition of boiling point? when a liquid turns to a gas
What is a solute? what dissolves in another substance
What is a solvent? what the substance is dissolved in
What is a solution? two substances that are evenly mixed together; solute dissolved in a solvent.
What is a homogenous mixture? mixture that has a combination of parts throughout the mixture; pure substances.
What is a heterogeneous mixture? can be easily separated; a mixture that is not the same throughout.
What does the atomic number represent? the number of protons.
What does the atomic mass represent? number of protons plus neutrons.
What is a noble gas? on the right, least reactive.
How do you find the number of neutrons? round atomic mass to the nearest whole number (mass #) an then - the atomic # from this #.
What are reactants and products? a reactant is the substance you have in the beginning. a product is a substance that is formed as the result of the chemical reaction; reactant on the left.
Created by: Brylee