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Embed code for: SI Session 3
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Chemistry 106 si Chapters 1 & 2 Delaney Fanslau
Formulated by ________
All matter is composed of _______.
All atoms of a given element are ______ to each other, but ____ from the atoms of all other elements.
Chemical compounds consist of atoms combined in ____ ____, only _____ numbers of atoms can combine.
Chemical reactions change only the way atoms are ______, the atoms are ________.
The smallest particle that an element can be divided and still retain the properties of that element
An atom is made up of:
Atomic number is the number of _______.
Symbol for atomic number = ____
Atoms are ______ charged
The number of ______ identifies the element.
The total charge of an atom is _____
The number of protons = the number of ________
Protons and electrons _____ on another.
The sum of the number of ____ and ____ in an atom.
Symbol for mass number = _____
An element can have a different number of ________, usually this is about the same number of _________
Two (or more) atoms of the same element, but with different number of _________.
The relative mass of an average_____ of an element.
Expressed in ____ _____ _____ (amu)
The numbers given at the _____ of the box containing the element on the periodic table.
Find the atomic weight of the following problems:
About 30% 10B and 70% 11B
About 60% 15O and 40% 16O
The atomic weight of Nitrogen is 14.007, which isotopes is more common 14N or 12N or 13N?
# of protons
# of neutrons
# of electrons
1. If an atom of Boron has 5 electrons, and a mass number of 11, how many neutrons does it have?
2. What is the mass number of an element with 17 protons, 18 neutrons, & 17 electrons?
3. What is the atomic number of an element with 13 protons, 14 neutrons, and 13 electrons?
4. If the element Sulfur has the mass number of 32, how many neutrons does this element have?
Developed by ____________
Arranges elements into groups according to their ________
Organizes elements into _______ and ______
Periods are the seven ______ rows, numbered 1-7
Groups are the 18 _______ rows
Within each group they have similar ________
1. alkali metals = ______
2. alkali earth metals = _____
3. halogens = ______
4. nobel (inert) gases = _____
1. What period is Sodium found in?
2. What group is Calcium found in?
3. What element can be found in period 3 of the halogens?
4. What element can be found in period 2, group 2A?
5. What period and group can Aluminum be found in?
Periodic table Questions
Density = ____/____
1. Gold (Au) has a density of 19.3 g/mL. If gold has a mass of 5.6 gram, what is Gold’s volume?
2. Iron (Fe) has a density of 22.3 g/mL. If Iron has a volume 4.33mL, what is Iron’s mass?
Specific Gravity is the density of a substance divided by the density of ______ at the _______ temperature.
Density of water = ______
Items with a greater density than water will _______
Items with a density less than water will ________
The amount of heat required to raise the temperature exactly ___ gram of a substance exactly ____oC
Label for specific heat = _______
Calorie = ________
Specific Heat of Water = _______
1. Calculate the mass of iron if it takes 180 cal to raise the temperature from 18 to 32 degrees Celsius. The specific heat of iron is 0.106 cal/g oC
2. It requires 500 calories to heat a cast iron frying pan from 25 oC to 100 oC. What is the mass of the frying pan? The specific heat of iron is 0.106 cal/g oC
3. What is the specific heat of a metal if it takes 26.5 calories to raise the temperature of a piece weighing 50.0 g by 5.00 oC
3. What is the specific heat of a metal if it takes 26.5 calories to raise the temperature of a p