Periodic Table
A pure substance that cannot be separated into simpler substances by physical or chemical means
Element or Atom
A combination of two or more substances that are not chemically combined
Mixture
Anything that has mass and takes up space
Matter
A substance that contains only one type of atom
Element
Mixtures are separated through these kind of changes
Physical changes
The smallest particle of matter
Atom
Elements can be classified into one of these three groups:
Metals, Nonmetals, Metalloids
A combination of two or more substances that are chemically bonded to each other
Compound
The three most familiar states of matter
Solid, Liquid, and Gas
The two sub-atomic particles that make up the nucleus.
What are protons & neutrons?
How are elements grouped in the periodic table? (Hint: one of the subatomic particles)
According to number of protons
A _____ is a mixture that appears to be a single substance but is composed of a solute dissolved in a solvent.
Solution
Which state of matter consists of tightly packed particles?
Solid
What does the term 'valence electrons' mean?
number of electrons on outermost shell,
Which subatomic particle of the atom is the smallest?
Electron
If a substance consisted of multiple compounds made of the same types of atoms, would it be considered a mixture or a pure substance?
Pure substance
How does one change a state of matter? (example: from solid to liquid)
Increase energy or heat