Activating Strategy Let’s See What you Know… In our previous lesson we learned that the pencil is made of ____? If you look closely at the tip of a sharpened pencil, you will see that it is made of a specific type of matter called graphite. The image shows a close up picture of the graphite. The graphite is made up of even smaller particles called _____. These particles contain even smaller particles called ______________. Matter How are atoms and molecules related? Standard: S8P1a. Distinguish between atoms and molecules Adapted from www.middleschoolscience.com 2008 S8P1a. Atoms & Molecules Name: ___________________ Essential Question: How are atoms and molecules related? Part I Atoms: __________________________________________________________________________ Use the Atoms and Molecules Notes sheet when instructed __________________________________________________________________________ Elements: __________________________________________________________________________ __________________________________________________________________________ Molecules: __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ Part II Identify whether the following is an atom, element, or molecule. Explain your answer. _______________________ _______________________ _________________________ Draw and label your own atom, element, and molecule. Image are from http://www.chem4kids.com •A small particle that makes up Matter •Consists of Protons (+), Electrons (-), and Neutrons (N) *Write information on the Notes Sheet How big is an atom? www.scaleofuniverse.com • Consists of only one kind of atom, • Cannot be broken down into a simpler type of matter *Write information on the Notes Sheet • 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 . *Write information on the Notes Sheet Distributed Summarizing Complete Part II of the Atoms and Molecules Notes Sheet. When instructed, compare your responses to a seat partner. Applying Atoms, Elements, Molecules and the Law of Conservation of Matter [Mass] A Chemical Formula is a representation of a substance using symbols for its essential elements. A Chemical Formula represents in symbols and numbers the amount of atoms in a specific type of matter. Look at Part III of your Atoms and Molecules Notes Sheet. Let’s examine a few Chemical Formulas. H2O = Water How many atoms are there in H2O? There are 2 Hydrogen Atoms and 1 Oxygen Atom Answer numbers 4, 5, and 6 on Part III of the Atoms and Molecules Notes Sheet A Chemical Equation is a symbolic representation of what happens when atoms react with each other Review: What is the Law of Conservation of Matter? The Law of Conservation of Matter [Mass] states that matter cannot be created or destroyed. It changes form. A Chemical Equation can illustrate the Law of Conservation of Matter. Let’s see how Law of Conservation of Matter [Mass]: The Mass of the Reactants is EQUAL to the Mass of the Products Law of Conservation of Matter [Mass] Law of Conservation of Matter [Mass] Summarizing Strategy How are atoms and molecules related? In Part IV of the Atoms and Molecules Notes Sheet, complete the two Quad Clusters.