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Chem-Module 4

QuestionAnswer
Pure substance A substance that contains only one element or compound
Mixture A substance that contains different compounds and/or elements
Homogeneous mixture A mixture with a composition that is always the same no matter what part of the sample you are observing
Heterogeneous mixture A mixture with a composition that is different depending on what part of the sample you are observing
Chemical change A change that affects the type of molecules or atoms in a substance
Physical change A change in which the atoms or molecules in a substance stay the same
The phases of matter are Solid, Liquid and Gas
The kinetic theory of matter states That molecules and atoms are in constant motion, and the higher the temperature, the greater their speed.
The homonuclear diatomics are nitrogen, oxygen, chlorine, fluorine, bromine, iodine
A chemical change is called a chemical reaction
The atoms and molecules on the left of the arrow are the reactants
The atoms and molecules on the right of the arrow are the products
If a chemical equation is not _______, then it is not correct balanced
You can only change ______ when balancing an equation, not _____ coefficients, subscripts
Name the first homonuclear diatomic nitrogen N2
Name the second homonuclear diatomic and its chemical symbol oxygen O2
Name the third homonuclear diatomic and its chemical symbol chlorine Cl2
Name the fourth homonuclear diatomic and its chemical symbol fluorine F2
Name the fifth homonuclear diatomic and its chemical symbol bromine Br2
Name the sixth homonuclear diatomic and its chemical symbol iodine I2
Created by: akikoandpoog