Diatomic Molecules
What is a diatomic element?
Diatomic elements are pure elements that only exist in the form of a molecule of two atoms bonded together.
What is an atom?
The smallest particle of an element.
What are certain digits and uncertain digits?
Certain digits are the numbers in your measurement that you know are accurate.
Uncertain digits are the numbers you can not guarantee are accurate in your measurement.
What are the fundamental SI units for mass, length, and temperatire?
Respectively: kilogram, meter, and kelvin.
What is the national animal of Scotland?
Unicorns!
True or false: N2 is a diatomic element
True!
What three things make up an atom?
Protons, neutrons, and electrons.
How many sig figs are present in 350?
two! the 0 in 350 is a trailing zero.
How many nanometers equal 1 meter?
109nm=1m
The "Hollywood" sign in California used to have another word following it up until 1949. What was that word?
Land. The sign said "Hollywood Land"
True or false: Mg is a diatomic element because you can find it as MgO
False.
What is a molecule made up of?
Two or more atoms bonded together.
Write 0.0006067 with only the significant figures.
6.067x10-4
convert 7.5 meters to millimeters
7.5m x 103mm = 7,500mm
What animal can sleep for up to three years at a time?
Snails!
What is Dr. Riley's mnemonic to remember the 7 diatomic elements?
Have No Fear Of Ice Cold Beer:)
What is the series of steps and procedures that we use to do scientific research called?
The scientific method.
Answer the following question applying sig fig and decimal place rules.
1.4450 + 1.2 - 0.232 =?
2.4
Convert 75 degrees Celsius to Kelvin
75 C + 273.15 = 348.15 K
There is only one state name in the US that is a single syllable. What is it?
Maine
List all of the 7 diatomic elements
H2 N2 F2 O2 I2 Cl2 Br2
Describe the difference between qualitative data and quantitative data.
qualitative data is descriptive data. It has no numerical properties. (Yellow substance)
quantitative data is strictly numerical. It contains numbers and units. (5 ounces)
Answer the following questions applying sig fig and decimal place rules.
670 x 4.5033 =?
=3.0x103
Feel free to use google, but do not look up a conversion calculator!
2kg x 1,000g= 2,000g
2,000g x 106ug= 2x109ug
What species of saltwater fish are always born as males?
Clownfish!