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Chemistry Essentials

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