dimensional analysis
what is dimensional analysis used for?
converting between units using conversion factors
what is the formula for density?
Density=mass/volume
Is boiling water a physical or chemical change?
physical
What particle in an atom has a negative charge?
electrons
Where is your SI leader from?
Albany NY
what is 2500 meters in Km?
2.5 Km
If mass = 10 g and volume = 2 mL, what is the density?
5g/ml
Is burning paper a physical or chemical change?
chemical
Where are protons located in the atom?
in the nucleus
what is the most popular pizza topping in the US
Pineapple
What is the conversion factor used to go from grams to milligrams
1 gram for every 1000mg
How many significant figures are in 0.0200?
3
Is air a homogeneous or heterogeneous mixture?
homogeneous
What does the atomic number of an atom tell you?
number of protons
what planet is known as the red planet
mars
what does the prefix nano represent in scientific notation
10-9
For multiplication, what determines sig figs in the final answer?
the measurment in the question with the fewest sig figs
Is salt (NaCl) an element, compound, or mixture?
compound
How many neutrons are in ¹⁴C?
8 neutrons
what is Dr. Werner's favorite animal
Hint: It's also a prefix that describes a positivley charged ion
Cat!!
convert 3.5 mg to kg
3,500,000
A sample has a mass of 12.30 g and a volume of 3.0 mL. What is the density with correct sig figs?
4.1 g/mL
Is dissolving sugar in water a physical or chemical change?
physical
How many protons, neutrons, and electrons are in ²⁷Al³⁺?
13 protons, 14 neutrons, 10 electrons
What is the name of the coffee shop in Friends?
Central Perk