Branches of Chem
Which branch of chemistry deals with matter containing carbon?
organic
Throughout your day, you use your five senses to make ____________.
observations
Write your own saying to remember the metric prefixes.
???
There are 57 mL of water in a graduated cylinder. After you drop your pen into the graduated cylinder, it reads 66 mL. What is the volume of the pen?
9 mL
You can bake cookies at 449.817 K. Convert to °C.
176.82 °C
Matter is anything that has ______ and _________.
mass and volume
a testable prediction
hypothesis
Use dimensional analysis (show all conversion factors) to convert 8397 mg to dg.
83.97 dg
Find the volume of a cube with side length 7.2 m.
373.25 m3
Dippin Dots are made at -195.556°C. Convert to K.
77.44K
Chemistry is the study of the _______ of matter and the _________ that matter undergoes.
composition; changes
When you make a judgement or assumption you are making an ______.
inference
The tallest building in the world, the Burj Khalifa, is 0.828 kilometers high. What is the building’s height in centimeters?
82,800 cm
Calculate the mass in kg of a sample of magnesium with a volume of 37 cm3 and a density of 1.7 g/cm3.
0.0629 kg
A student determines that increasing temperature leads to an increase in the volume of a balloon. What is the relationship between temperature and volume?
direct
Which branch involves study of the composition of substances?
analytical
Give an example of qualitative data.
any data/observation that does not involve a number
Use dimensional analysis (show all conversion factors) to convert 5 days to minutes.
7200 min
Find the volume in cm3 of a box with a length of 375 mm, a width of 8.32 cm, and a height of 0.15 m.
4680 cm3
Gravitational acceleration is approximately 9.80665 m/s2. Calculate the percent error if you use 10 m/s2 on your physics homework.
1.97%
Which branch involves the study of the behavior of substances (and uses a lot of math)?
physical chemistry
An experiment must have a ____________ for comparison to determine the effect of the experimental variable.
control group
One 1.623-oz package of Peaches ‘n Cream Quaker Instant Oatmeal contains 27 grams of carbohydrates. If you had 2 packages of instant oatmeal for breakfast every day for two weeks, how many kilograms of carbohydrates would you consume?
0.756 kg
A homeowner is considering installing a granite countertop in the kitchen. Find the area of a slab of granite with a mass of 35.8 kg and a thickness of 25.4 mm. The density of granite is 2.7 g/cm3. Show all conversion factors.
5220 cm2
A student who wanted to know the density of copper found that the density of a brand new penny is 7.185 g/cm3. However, new pennies are made mostly of zinc. If the density of copper is 8.96 g/cm³, what was the percent error?
19.8%