Review of Matter

1. Matter Energy Pure Substances Mixtures Elements Compounds Heterogeneous Homogeneous Review of Matter

2. What is the physical state of each item at room temperature? gold gasoline helium paraffin wax rubbing alcohol mercury States of Matter

3. Classify each of the following as homogeneous or heterogeneous mixtures. blood chocolate chip ice cream brass motor oil black coffee Heterogeneous Heterogeneous Homogeneous Homogeneous Homogeneous Mixtures

4. Mixtures • How many phases does every solution have? • 1 • 2 • 3 • 0

5. Classify each of the following as an element or a mixture silver pine tree orange juice oxygen iced tea air Element Mixture Mixture Element Mixture Mixture Mixtures

6. Name the colored element in each of the following compounds NH4Cl KMnO4 C3H7OH CaI2 (nitrogen) (potassium) (carbon) (iodine) Elements

7. How many total elements make up each of the following compounds? NH4Cl 3 6 4 KMnO4 7 3 6 C3H7OH 11 12 4 CaI2 3 4 2 Elements

8. Classify each of the following as a physical or chemical change. bending a piece of wire burning coal cooking a steak cutting grass Physical Chemical Chemical Physical Physical or Chemical Change

9. Classify each of the following as being either a physical or chemical change color change boiling cutting energy absorbed or released gas produced freezing odor change Chemical Physical Physical Chemical Chemical Physical Chemical Physical or Chemical Change

10. Identify each of the following as a mixture or a compound. soda candle wax fog ink egg ice gasoline blood Mixture Mixture Mixture Mixture Mixture Compound Mixture Mixture Mixture or Compound?

11. Identify each of the following as being a heterogeneous or homogeneous mixture. soda candle wax fog ink egg gasoline blood Homogeneous Homogeneous Heterogeneous Homogeneous Heterogeneous Homogeneous Homogeneous Heterogeneous or Homogeneous?

12. Classify the following properties of the element silicon as chemical or physical properties. blue-grey color brittle insoluble in water melts at 1410 °C reacts vigorously w/ fluorine Physical Physical Physical Physical Chemical Chemical or Physical?

13. Look at the following models. (1) Identify each as a substance or a mixture. (2) Then describe its composition as elements only, compounds only, mix of elements, and mix of compounds. • (a) substance /elements only • (b) mixture /mix of compounds • (c) substance /elements only (diatomic) • (d) substance /elements only • (e) mixture / mix of elements • (f) mixture /mix of elements • (g) substance /compounds only • (h) mixture /mix of elements