Classifying Matter
Anything that has mass and takes up space.
Matter
Bubbles, color change, or the formation of a precipitate are all evidence of this.
Chemical Change
This group of elements is located on the right side of the staircase and are mostly gases at room temperature.
Non-metals
The three subatomic particles that make up an atom.
Protons, Neutrons, and Electrons
A compound formed when a metal and a non-metal bond together.
Ionic Compound
A pure substance that cannot be broken down into simpler parts.
Element
A property that can be measured and expressed with numbers, like mass or height.
Quantitative Property
The name for the vertical columns on the periodic table.
Chemical Families (or Groups)
This number is equal to the number of protons in an atom's nucleus.
Atomic Number
A particle that has a positive or negative charge because it gained or lost electrons.
Ion
A solid mixture of two or more metals, such as brass or bronze.
Alloy
The formula used to find the mass of a substance if you know its density and volume.
m = D x V
his highly reactive family is found in Group 17 of the periodic table.
Halogens
To find this, you subtract the atomic number from the atomic mass.
Number of neutrons
This type of compound forms when two non-metals share electrons.
Molecular Compound
A mixture where you can clearly see the different parts.
Mechanical Mixture
These specific properties, like boiling point or density, are used to identify unknown substances.
Characteristic Physical Properties
This trend describes how chemical activity increases as you move down a family for metals.
Reactivity
This central part of the atom contains the protons and neutrons.
Nucleus
Elements like Oxygen (O2) and Hydrogen (H2) that always travel in pairs.
Diatomic Elements (or Compounds)
A pure substance made of two or more elements chemically joined together.
Compound
calculate the volume of a 5.00g iron sample with a density of 7.87g/cm3. You can grab a calculator (no phones!)
0.635cm3
These elements have properties of both metals and non-metals.
Metalloids
In a Bohr-Rutherford diagram, this is the maximum number of electrons the first and second orbitals can hold.
2 and 8
A negatively charged ion is called this.
Anion