Unit 1 Math - Dim. Analysis, SigFigs, & Sci. Notation
Density
Calorimetry
Protons/Neutrons
Electrons
100
How many sigfigs are in the following number?
0.001030
4
100
What is the equation for density?
D = m/v
100
In the equation below, which variable represents specific heat capacity?
q=mcΔT
c
100
A particle with an equal number of protons and electrons is called a(n) _____________.
atom
100
A particle with an unequal number of protons and electrons is called a(n) _____________.
Ion
200
How many sigfigs are in the following number?
708090
5
200
What are the two possible options for units of volume that we learned about?
mL and cm3
200
What is the unit for specific heat capacity?
J/(g⋅°C)
200
How many neutrons does sodium-23 have?
12
200
What element has a ground state electron configuration ending in 4d9?
Silver (Ag)
300
How many sigfigs are in the following number?
708090.00
8
300
Which of the following (A, B, C, or D) is most dense?
A
300
Which equation would you use at point B?
q = m ⋅ Hf
300
What is the most likely to be the most abundant isotope of Argon?
Argon-40
300
Which of the following has the greatest force of attraction between electron and proton(s)?
D
400
Write the following number in scientific notation?
709,000,000
7.09 x 108
400
What is the density of object D?
12 g/cm3
400
When 435J of heat is added to 3.4g of olive oil at 21°C, the temperature increases to 85°C. What is the specific heat of olive oil? (sigfigs and units count in your final answer)
2.0 J/g⋅°C
400
A Bi-3 ion has how many protons?
83
400
An electron moves from energy level 5 (n=5) to energy level 4 (n=4). The electromagnetic radiation would have a _______ wavelength and ______ energy.
1. Long
2. Low
500
There are 149,600,000 kilometers between the Earth and the Sun. How many miles is this? (Hint: there are 1.609 km in 1 mile)
Yes sigfigs and units count in your final answer!
92,980,000 miles
500
An object has a volume of 6.25 mL and a density of 3.04 g/mL. Calculate the mass. (Include the correct number of sigfigs and units)
m = 19.0g
500
Calculate the energy required to melt 25.0 g of ice. (Hint: Hf = 334 J/g)
8,350 J
500
Write the atomic symbol for a bromine ion with one more electron than proton and 45 neutrons.
500
The force of attraction between the electron and the proton shown below is 6.0 N.
If the distance were to change to 0.10 nm, what would be the resulting force of attraction (include units)?
24 N