1. Chemistry I – Unit 3: Atoms, Molecules, Matter & Properties

2. Matter that has uniform, unchanging composition or make up from one sample to another. [p55] _________________ for example (eg.) Table Salt _________________ U3: Atoms, Molecules & Matter Substance(s)

3. An identifying characteristic that can be observed or measured without changing the substance’s composition. [p. 56] ________________ Eg. – density, color, odor, taste, hardness, melting point (mp), boiling point (bp), physical state of matter @ different temperatures – to name a few… U3: Atoms, Molecules & Matter Substance(s) PHYSICAL Property

4. Physical properties that are dependent upon the AMOUNT of the substance present or available. [p. 56] ________________ Eg. – Mass (depends on the amount) of an object/substance; length, volume, weight… U3: Atoms, Molecules & Matter Substance(s) PHYSICAL Property PHYSICAL Property - Extensive

5. Physical properties that are Independent [of] the AMOUNT of the substance present or available. [p 56] ________________ Eg. – Density (g/cmᶟ)… the bigger the object the more water it displaces and yet the “ratio” of grams over volume doesn’t change. Color, MP, BP, FP, U3: Atoms, Molecules & Matter Substance(s) PHYSICAL Property PHYSICAL Property - Intensive

6. Physical properties that are dependent upon the AMOUNT of the substance present or available. Physical properties that are independent [of] the amount of the substance present. Matter that has uniform, unchanging composition or make up from one sample to another. An identifying characteristic that can be observed or measured without changing the substance’s composition. U3: Atoms, Molecules & Matter Substance(s) PHYSICAL Property PHYSICAL Property - Extensive PHYSICAL Property - Intensive

7. Physical properties that are dependent upon the AMOUNT of the substance present or available. Physical properties that are independent [of] the amount of the substance present. Matter that has uniform, unchanging composition or make up from one sample to another. An identifying characteristic that can be observed or measured without changing the substance’s composition. U3: Atoms, Molecules & Matter Substance(s) PHYSICAL Property PHYSICAL Property - Extensive PHYSICAL Property - Intensive

8. White crystal Liquid @ ambient 19.4 g/cmᶟ 10 cm x 10 cm Weighs 58.5 grams Match stick broke in-half; both pieces are wood. Mud puddle U3: Atoms, Molecules & Matter Substance(s) PHYSICAL Property - Extensive PHYSICAL Property - Intensive NON-Substance(s) PHYSICAL Property - Extensive PHYSICAL Property - Intensive

9. White crystal Liquid @ ambient 19.4 g/cmᶟ 10 cm x 10 cm Weighs 58.5 grams Match stick broke in-half; both pieces are wood. Mud puddle U3: Atoms, Molecules & Matter Substance(s) PHYSICAL Property - Intensive NON-Substance(s) PHYSICAL Property - Intensive PHYSICAL Property - Extensive

10. The ability of a substance to combine with –or change into – another substance. The contra-positive is true too; the Inability of a substance to combine with – or change into – another substance is ALSO considered to be a chemical property Chemical Properties U3: Atoms, Molecules & Matter

11. The ability of a substance to combine with –or change into – another substance. The contra-positive is true too; the Inability of a substance to combine with – or change into – another substance is ALSO considered to be a chemical property Chemical Properties U3: Atoms, Molecules & Matter Eg. – Steel wool (iron) in a capped test tube of N₂ gas will not react (chem property), but in O₂ gas it will “rust” (oxidize) or react.

12. Will form a green copper carbonate when in contact with moist (water carrying) air. Reddish brown, shiny D = 8.92 g/cm³ Will form new substances when combined with nitric acid and sulfuric acid. MP = 1,085 degrees C Forms a deep blue solution when it comes in contact with ammonia. Good conductor of heat and electricity. BP = 2,570 degrees C Easily formed into sheets (malleable) & drawn into wires (ductile) Chem. Prop. Phys. Prop. (Extrinsic) Phys. Prop. (Intrinsic) Chem. Prop. Phys. Prop. (Extrinsic) Phys. Prop. (Intrinsic)

13. Will form a green copper carbonate when in contact with moist (water carrying) air. Reddish brown, shiny D = 8.92 g/cm³ Will form new substances when combined with nitric acid and sulfuric acid. MP = 1,085 degrees C Forms a deep blue solution when it comes in contact with ammonia. Good conductor of heat and electricity. BP = 2,570 degrees C Easily formed into sheets (malleable) & drawn into wires (ductile) Chem. Prop. Phys. Prop. (Extrinsic) Phys. Prop. (Intrinsic) Chem. Prop. Phys. Prop. (Extrinsic) Phys. Prop. (Intrinsic)