Exam 1 Flashcards
What is the SI unit for length?
meter (m)
What is the SI unit for time?
sencond (s)
What is the SI unit for mass?
kilogram (kg)
What is the SI unit for temperature?
kelvin (K)
What is the SI unit for volume?
cubic Meters (m³)
What is the SI unit for amount of substance?
mole (mol)
What does the unit prefix “T” stand for and what is its fact?
tera- 10¹²
What does the unit prefix “G” stand for and what is its fact?
giga- 10⁹
What does the unit prefix “M” stand for and what is its fact?
mega- 10⁶
What does the unit prefix “k” stand for and what is its fact?
kilo- 10³
What does the unit prefix “d” stand for and what is its fact?
deci- 10⁻¹
What does the unit prefix “c” stand for and what is its fact?
centi- 10⁻²
What does the unit prefix “m” stand for and what is its fact?
milli- 10⁻³
What does the unit prefix “µ” stand for and what is its fact?
micro- 10⁻⁶
What does the unit prefix “n” stand for and what is its fact?
nano- 10⁻⁹
What does the unit prefix “p” stand for and what is its fact?
pico- 10⁻¹²
What is the definition of a liter?
1 L = 10⁻³ m³
What is the definition of an angstrom?
1 Ȧ = 10⁻¹⁰ m
What are protons?
Positively charged subatomic particles, found in the nucleus of an atom. It gives an element it’s identity (the amount of protons is unique to every element).
What are neutron?
Subatomic particles with no charge, found in the nucleus of an atom.
What are electrons
Negatively charged subatomic particles, that orbit the nucleus.
What is the Law of Conservation of Mass?
Mass is neither created or destroyed during a chemical reaction.
What is mass percent?
Mass of a chemical (element) in a compound divided byt the total mass of a compound then multiplied by 100 to be turned into a percent
What is the Law of definite proportions?
a chemical compound will always have the same proportions or amount of each element by weight, no matter what the amount is, or source. (example: 50-grams of carbon monoxide will have 21.5 g of carbon and 28.5 g of oxygen.)
