1. 5th Grade Science Mrs. LaRosa Matter Study Guide www.middleschoolscience.comwww.middleschoolscience.com 2008

2. Anything that has a mass and a volume

3. The building blocks of Matter Consists of Protons (+), Electrons (-), and Neutrons (N). Consists of only one kind of atom, Cannot be broken down into a simpler type of matter by either physical or chemical means Can exist as either atoms or molecules. Images are from http://www.chem4kids.com

4. Parts of an Atom Nucleus of An Atom – The central core of an atom! Holds the protons and neutrons  Protons – positively charged atoms  Neutrons are neutrally charged atoms

5. Parts of an atom part 2 Outside of the nucleus is the electron cloud – where the electrons orbit around the nucleus of the atom (Energy stree, energy superhighway, and energy freeway) Electrons: negatively charged particles

6. A molecule consists of two or more atoms of the same element, or different elements, that are chemically bound together. In the animation above, two nitrogen atoms (N + N = N2) make one Nitrogen molecule.

7. Animated images and notes from http://www.chem.purdue.edu/gchelp/atoms/elements.htmlhttp://www.chem.purdue.edu/gchelp/atoms/elements.html Atoms of two or more different elements bound together. Can be separated into elements chemically, but not physically. In the animation above, water (H 2 0) is a compound made of Hydrogen and Oxygen.

8. Solutions are groups of molecules that are mixed up in a completely even distribution. Uniform Distribution. Example: Sugar and Water Images are from http://www.chem4kids.com

9. The substance to be dissolved. The one doing the dissolving. Images are from http://www.chem4kids.com

11. Particle sizes are in between the size of particles found in solutions and suspensions. Can be mixed and remain evenly distributed without settling out.

12. They are substances held together by physical forces, not chemical. Can be separated physically. Solutions are also mixtures. The substances are not uniformly mixed. Example: Sand in a glass of water. Images are from http://www.chem4kids.com

13. Are heterogeneous mixtures consisting of parts that are visible to the naked eye. Example: the ingredients in salad dressing Substances will settle over time.

14. Matter MixturesHomogeneous Solution Solvent SolutionColloids Heterogeneous Suspensions Pure Substances ElementMoleculeCompounds