Matter LT 4. Physical Properties LT 4. Chemical Properties

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Presentation transcript:

Matter LT 4. Physical Properties LT 4. Chemical Properties LT 6. Classify matter

Physical & Chemical Properties Physical Properties are defined as... Properties that do not change the chemical nature of matter Chemical Properties are defined as... Chemical Properties are properties that change the chemical nature of matter

Physical & Chemical Properties Name the following as being physical or chemical properties 1. the color of NaOH is white 2. hydrogen gas is flammable 3. magnesium is reactive in hydrochloric acid 4. the density of aluminum 2.70 g/mL 5. methane is combustible in oxygen gas 6. the melting point of lauric acid is 43.2 Celsius 7. pure gold is very malleable

Physical & Chemical Properties Name the following as being physical or chemical properties 1. Physical Property 2. Chemical Property 3. Chemical Property 4. Physical Property 5. Chemical Property 6. Physical Property 7. Physical Property

Classifying Matter

Classifying Matter Classify the following substances: 1. NaOH 2. Mg 3. HCl 4. S 5. CH4 6. NaCl 7. Si 8. Cu2O

Classifying Matter Classify the following substances: 1. NaOH; pure, compound, inorganic, base 2. Mg; pure, element, metal 3. HCl; pure, compound, inorganic, acid 4. S; pure, element, nonmetal 5. CH4; pure, compound, organic 6. NaCl; pure, compound, inorganic, salt 7. Si; pure, element, metalloid 8. Cu2O; pure, compound, inorganic, salt

LT 9. Components of elements LT 10. Components of ion Atom LT 9. Components of elements LT 10. Components of ion

Atom components Cadmium 114 76 116 35 36 80 42 74.92 Element Name Complete symbol Atomic # # of Protons # of Neutrons # of Electrons Mass # Atomic Mass Cadmium 114 76 116 35 36 80 42 74.92

Atom components Cadmium -114 48 66 114 112.41 Osmium-188 76 112 188 Element Name Complete symbol Atomic # # of Protons # of Neutrons # of Electrons Mass # Atomic Mass Cadmium -114 48 66 114 112.41 Osmium-188 76 112 188 190.23 Bromine-80 35 45 36 80 79.90 Arsenic- 75 33 42 75 74.92

Calculating average atomic mass LT 11. Calculate average atomic mass

Calculating average atomic mass The element boron consists of two isotopes; Boron-10 and Boron-11. The abundance of Boron-10 is only 20%. What is the average atomic mass of Boron?

Calculating average atomic mass The atomic mass of magnesium, from the periodic table, is 24.31 amu. Magnesium has three isotopes; isotope #1 has an abundance of 78.99%, isotope #2, with a mass number of 25 has an abundance of 10.00%, and isotope #3, with a mass number of 26 has an abundance of 11.01%. What is the mass number of isotope #1?

LT 12. use factor label method to count by mass Counting by Mass LT 12. use factor label method to count by mass

Counting by Mass How many moles of Iron are contained in 105 g?

Counting by Mass If a beaker contains 9.25 x 1025 atoms of Sc, how many moles would be in the beaker?

Counting by Mass A student placed 61.5 g of Antimony on the scale in the lab. How many atoms of Antimony are sitting on the scale?

Counting by Mass If it was determined that a student placed 8.04 x 1021 atoms of Zirconium. If this student placed the Zirconium on the scale, how much would it weigh in grams?