1. UNIT 3 PERIODIC TABLE and BONDING

2. Types of Matter Element - _______________ substance _______________ kind of _______________ − represented by ______________ or ______________ letter symbol − example: ______________ (___) Compound -______________ or more ______________ ______________ combined − represented by ______________ ______________ − example: ______________ (____) − H 2 O ______________ into _____________ _________ and ______________ _________. − ______________ in same ______________ Mixture - ______________ or more substances ______________ ______________ do not ______________ in same ______________ heterogeneous mixture - not _________ homogeneous mixture (solution) - _________ alloy - _________ of two or more _________ Pure ______________ are ______________.

3. Take Notes in Notebook http://www.gpb.org/chemistry- physics/chemistry/202 http://www.gpb.org/chemistry- physics/chemistry/202 Do worksheet on this page together

5. Solvents and Solutes Solvents and solutes can be any state of matter. A solution is another name for homogeneous mixtures that are stable. In salt water, for instance, the salt stays dissolved. – A solution cannot be separated by filtration. Figure 15.6 A solution cannot be separated by filtration. The small size of the solute particles allows them to pass through filter paper.

6. Suspensions Suspensions are heterogeneous because at least two substances can be clearly identified. – Unlike solutions, suspensions can be separated by filtration. Figure 15.14 A suspension is a heterogeneous mixture. Suspended particles can be removed by filtration. Comparing And Contrasting How does the filtration of a suspension compare with the filtration of a solution?

8. Take Notes http://www.gpb.org/chemistry-physics/chemistry/203 Separating Mixtures The components of a mixture may be separated based on the physical properties of: __________________ __________________ (An instrument that uses this property to separate mixtures when tiny solid particles are dissolved in a liquid is called a __________________.) Some techniques used to separate the components of a mixture are: __________________ -- used to separate liquids and solids __________________ -- used to separate solutions

9. Review WS (from GPB 202) Classify each of the following as an element (E), compound (C), homogeneous mixture/solution (S), or heterogeneous mixture (HE). chocolate chip cookie _____ oxygen gas _____ salt water _____ taco _____ gold _____ carbon dioxide _____ water _____ kool aid _____ table salt _____ muddy water _____ potassium _____ brass _____ graphite _____ glass _____ air _____