Element | Symbol |
Hydrogen | H |
Aluminum | Al |
Iron | Fe |
Lead | Pb |
Carbon | C |
Silicon | Si |
Cobalt | Co |
Nitrogen | N |
Sulfur | S |
Oxygen | O |
Copper | Cu |
Chlorine | Cl |
Zinc | Zn |
Sodium | Na |
Calcium | Ca |
Silver | Ag |
Magnesium | Mg |
Potassium | K |
Gold | Au |
Mercury | Hg |
Phosphorus | P |
Manganese | Mn |
The atomic number tells you what? | The number of protons |
The atomic mass equals... | Protons + Neutrons |
Most of the mass from the atom comes from... | Inside the nucleus |
What are groups? | Groups are the columns on the periodic table that are based on how many electrons are in the outer shell |
What are periods? | Periods are the rows on the periodic table that are based on how many electron shells the element has |
Almost all of the elements on the periodic table are classified as metals, nonmetals, or metalloids? | Metals |
What charge do protons have? | Positive |
What charge do electrons have? | Negative |
What charge do neutrons have? | No Charge |
Chemical Property or Chemical Change are indicated when... | it is undergoing a chemical reaction (something new is being formed) |
Physical Property or Physical Change are indicated when... | Phase change or the physical nature of the substance has changed (color, texture...) |
Define an atom. | the smallest particle of an element that has the properties of that element |
Define an element. | A substance made up of all the same atoms (found on periodic table) |
Define molecule. | A substance made of two or more atoms chemically bonded together |
Define compound. | A substance made of two or more different kinds of atoms that are chemically bonded together |
Define solution. | A mixture in which a solid has dissolved in |
Define mixture. | A collection of substances that are NOT bonded together |
Be able to identify gases, liquids and solids. | |