Significant Figures
Isotopes
Calculations!
Physical, Chemical, and Types of Substances
Precision and Accuracy
100
The number of Sig Figs in 1400
What is 2?
100
Number of protons in oxygen.
What is 8?
100
The density of a sample with a mass of 34 grams and a volume of 1.88 mL
What is 18 g/mL?
100
Salt and water
What is a homogenous mixture?
100
The closeness of your data to each other
What is precision?
200
The number of Sig Figs in 14.00
What is 4
200
Number of neutrons in phosphorus- 32.
What is 17?
200
The mass of 25.0 mL of copper (d=8.96 g/mL)
What is 224 g?
200
Helium
What is an element/pure substance?
200
The closeness to the true value
What is accuracy?
300
The number of Sig Figs in 1400.7
What is 5
300
Number of protons, neutrons and electrons in carbon 13.
What is 6 protons, 6 electrons and 7 neutrons?
300
A cube of aluminum measures 2.5 cm x 3.7 cm x 9.1 cm and has a mass of 227 grams. This is the density.
What is 2,7 g/mL
300
This is how a student could separate salt, water, feathers.
What is filtration and then distillation?
300
Getting the same answer repeatedly
What is precision?
400
The number of Sig Figs in 1400.0030
What is 8
400
Number of protons, neutrons and electrons in uranium - 238.
What is 92 protons, 92 electrons and 146 neutrons?
400
The density of water.
What is 1 g/mL
400
This is the process someone uses to remove colored dye from water.
What is chromatography?
400
Hitting the bullseye of the target
What is accuracy?
500
The correct answer of 13.5 + 2
What is 16
500
A bromine atom has 35 protons and 36 electrons. This is the charge.
What is -1?
500
69.09% of copper atoms have a mass of 62.93 amu. 30.91 % of copper atoms have a mass of 64.93 amu. This is the average atomic mass.
What is 63.55 amu?
500
This is how to separate sand, sugar, water, oil and dye.
What is filtration (sand), chromatography (dye), distillation -2 times?
500
A student measures the mass as 3.5 grams but the true value is 4.2 grams. This is the percent error.
What is 20%
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