Periodic Table
A list of all the known elements, sorted by atomic numbers, masses, and properties
What is the Periodic Table?
Anything that has mass and takes up space
What is matter?
A combination of elements and/or molecules to form a substance which can be easily separated through a physical change
What is a mixture?
The chemical formula for water
What is H2O?
Mg
What is the atomic symbol for magnesium?
Columns on the Periodic table that sort the chemical properties of each element
What are groups?
Matter cannot be created nor destroyed
What is the Law of Conservation of Mass?
A type of mixture where particles are evenly distributed and only has one solid texture; sometimes known as a solution
What is homogeneous?
CO2
What is the chemical formula for carbon dioxide?
The element with an atomic number of 7
What is nitrogen?
Rows on the Periodic Table that tell you how many electron shells an element has
What are periods?
A pure substance that is composed of two or more atoms and cannot be separated physically
What is a molecule?
A type of mixture where particles are NOT evenly distributed and has multiple visible textures
What is heterogeneous?
A pure substance that is made of two or more different atoms; it usually has different properties than the elements that make it
What is a compound?
Tin's atomic symbol
What is Sn?
Group 18; stable and unreactive elements
What are the noble gases?
Subatomic particles in the outermost electron shell of an atom; they determine an element's reactivity
What are valence electrons?
The two parts to a solution
What are solutes and solvents?
Substances that form when alkali metals and halogens react
What are salts?
Group 17, period 2 on the Periodic Table
What is fluorine?
Groups 3-12; all share similar chemical properties
What are the transition metals?
An atom with a positive/negative atomic charge because it has less/more electrons than it does protons
What is an ion?
An everyday mixture that is mostly composed of nitrogen, oxygen, argon, and carbon dioxide
What is air?
NaHCO3
What is the chemical formula for baking soda?
The atomic number for potassium
What is 19?