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Chemistry Essentials

Teacher: Kizelewicz
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Across
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The variable that has units such as kPa and atm
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This type of reaction absorbs energy from the surroundings
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The phase of matter that has particles vibrating in place
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A substance present before a chemical reaction
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A pure substance made of two or more types of atoms bonded together
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The electron ____________ for an element lists out all the electrons in an atom and starts with 1s
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These types of changes only change the appearance of something, but leave the identity intact
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An atom that has gained or lost electrons and now has a charge
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The periodic trend that describes how well an element attracts electrons from other elements (Fluorine has the highest value)
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This rule describes the idea that a full shell of eight valance electrons is considered most stable
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This type of replacement reaction require 2 compounds
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Chemical _________ energy is the energy stored in the bonds of reactants or products
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The process used to determine the quantitative relationships between different chemicals in a balanced equation
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The type of chemical bond formed by the sharing of valence electrons
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The term for a group of atoms that act as a single ion such as sulfate
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A pure substance made of a single type of atom
Down
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The unit used to describe a group of particles equivalent to Avogadro's number
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The variable that has units such as C and K
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This term describes the state when a photon absorbs energy and jumps to a higher energy level
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Neutral subatomic particle that adds to the mass
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This type of chemical reaction produces water and carbon dioxide
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Small, negatively charged subatomic particle that determines bonding
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The gas law that relates temperature, pressure, volume, and moles at a single point in time
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The term for elements that naturally occur as pairs (BrINClHOF)
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A type of mixture that contains distinct layers or phases
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This periodic trend can be explained by saying that the larger the element the lower the ___________ energy
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This type of reaction releases energy to the surroundings
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The name for the reactant that is used up first in a chemical reaction
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The type of chemical bond formed by the transfer of valence electrons
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The law of _____________ of mass states that matter cannot be created or destroyed in a chemical reaction
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This type of chemical reaction comes from a single reactant
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The phase of matter that has particles moving rapidly and randomly while spread far apart
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This type of chemical reaction results in a single product
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The name for the reactant that is not used up in a chemical reaction
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Different versions of the same element that have different mass numbers
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This type of replacement reaction requires an element and a compound
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A horizontal row on the periodic table
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These types of changes result in new forms of matter being created
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The positive subatomic particle that controls an element's identity
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Something that contains two or more pure substances physically put together
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What is formed when a nonmetal gains electrons to become negative