Vocab
What is Chemistry
Study of matter and changes in matter
What is matter?
Anything that takes up space and has mass
Convert 0.0001m to cm
0.01 cm
What is the mathematical equation for density?
Density = Mass/Volume
How many protons does the element Fe have?
26
What is an isotope?
Where the protons stay the same for the element and the neutrons change
Neutron: Charge, weight, and location
0, 1 amu, Nucleus
A persons weight is 154 pounds. Convert this to kilograms. (1kg = 2.205 lbs)
69.9 kilograms
4
How many electrons does the stable state of the element Cn have?
112
What are micro and macro nutrients
Mirco: need less than 100 mg per day
Macro: need more than 100 mg per day
Electron: Charge, weight, location
-1, .00055 amu, orbitals
How many mg are in 20.0 kg?
20,000,000 mg
How many SF are in 0.0550
3
True or false: Argon(Ar) needs to bind with another element to complete its valance electron octet
False
What are cations and anions
cation: positively charged ion
anion: negatively charged ion
Define element and compound
Element: pure substance containing only one type of atom
Compound: A pure substance containing two or more elements that are chemically combined in specific ratios
How many milliliters is equivalent to 75.6 microliters
board
Calculate the mass of a liquid with a density of 2.5 g/ml and a volume of 15 ml
37.5 g
Name the first 10 elements on the periodic table
Hydrogen, Helium, Lithium, Beryllium, Boron, Carbon, Nitrogen, Oxygen, Fluorine, Neon
Define Radioisotope
Isotopes have unstable nucleus and they emit radiation
What is a measurement?
Obtained quantity using a measuring device
How many seconds old are you (use the age 22) (1 year = 365 days)
22 years old = 6.9 x 10 to the 8th
Calculate the volume of a liquid with a density of 5.45 g/ml and a mass of 65 g
11.93ml -> 12ml
Kevins sister suffers from bipolar disorder, what would be an element that would be useful for treatment?
Lithium