matter lt 4. physical properties lt 4. chemical properties lt 6. classify matter
TRANSCRIPT
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Matter
LT 4. Physical PropertiesLT 4. Chemical PropertiesLT 6. Classify matter
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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
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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
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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
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Classifying Matter
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Classifying Matter
Classify the following substances:
1. NaOH
2. Mg
3. HCl
4. S
5. CH4
6. NaCl
7. Si
8. Cu2O
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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
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Atom
LT 9. Components of elementsLT 10. Components of ion
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Atom components
Element Name
Complete symbol
Atomic #
# of Protons
# of Neutrons
# of Electrons
Mass #
Atomic Mass
Cadmium 114
76 116
35 36 80
42 74.92
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Atom components
Element Name
Complete symbol
Atomic #
# of Protons
# of Neutrons
# of Electrons
Mass #
Atomic Mass
Cadmium -114
48 48 66 48 114 112.41
Osmium-188
76 76 112 76 188 190.23
Bromine-80
35 35 45 36 80 79.90
Arsenic- 75
33 33 42 33 75 74.92
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Calculating average atomic mass
LT 11. Calculate average atomic mass
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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?
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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?
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Counting by MassLT 12. use factor label
method to count by mass
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Counting by Mass
How many moles of Iron are contained in 105 g?
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Counting by Mass
If a beaker contains 9.25 x 1025 atoms of Sc, how many moles would be in the beaker?
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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?
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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?