305,859 students have used Clutch for Chem
97% got a better grade
2,784 minutes of Chemistry videos

544 Video Solutions

Give four examples illustrating each of the following terms.
c. compound

Watch Solution

Give four examples illustrating each of the following terms.
b. heterogeneous mixture

Watch Solution

Give four examples illustrating each of the following terms.
a. homogeneous mixture

Watch Solution

What is the difference between random error and systematic error?

Watch Solution

Explain the fundamental steps of the scientific method.

Watch Solution

The difference between a law and a theory is the difference between what and why. Explain.

Watch Solution

Consider multiplying 26.2 by 16.43. What would a mathematician say the answer is? What would a scientist say? Justify the scientist’s answer, not merely citing the rule, but explaining it.

Watch Solution

Consider the addition of 15.4 to 28. What would a mathematician say the answer is? What would a scientist say? Justify the scientist’s answer, not merely citing the rule, but explaining it.

Watch Solution

You are driving 65 mi/h and take your eyes off the road for “just a second.” What distance (in feet) do you travel in this time?

Watch Solution

If you place a glass rod over a burning candle, the glass appears to turn black. What is happening to each of the following (physical change, chemical change, both, or neither) as the candle burns? Explain each answer.

c. the glass rod

Watch Solution

If you place a glass rod over a burning candle, the glass appears to turn black. What is happening to each of the following (physical change, chemical change, both, or neither) as the candle burns? Explain each answer.

b. the wick

Watch Solution

If you place a glass rod over a burning candle, the glass appears to turn black. What is happening to each of the following (physical change, chemical change, both, or neither) as the candle burns? Explain each answer.
a. the wax

Watch Solution

You may have noticed that when water boils, you can see bubbles that rise to the surface of the water.

b. Is the boiling of water a chemical or physical change? Explain.

Watch Solution

You may have noticed that when water boils, you can see bubbles that rise to the surface of the water.

a. What is inside these bubbles?
i. air
ii. hydrogen and oxygen gas
iii. oxygen gas
iv. water vapor
v. carbon dioxide gas

Watch Solution

You have two beakers, one filled to the 100-mL mark with sugar (the sugar has a mass of 180.0 g) and the other filled to the 100-mL mark with water (the water has a mass of 100.0 g). You pour all the sugar and all the water together in a bigger beaker and stir until the sugar is completely dissolved. 

b. Which of the following is true about the volume of the solution? Explain.
i. It is much greater than 200.0 mL.
ii. It is somewhat greater than 200.0 mL.
iii. It is exactly 200.0 mL.
iv. It is somewhat less than 200.0 mL.
v. It is much less than 200.0 mL.

Watch Solution

You have two beakers, one filled to the 100-mL mark with sugar (the sugar has a mass of 180.0 g) and the other filled to the 100-mL mark with water (the water has a mass of 100.0 g). You pour all the sugar and all the water together in a bigger beaker and stir until the sugar is completely dissolved. 

a. Which of the following is true about the mass of the solution? Explain.
i. It is much greater than 280.0 g.
ii. It is somewhat greater than 280.0 g.
iii. It is exactly 280.0 g.
iv. It is somewhat less than 280.0 g.
v. It is much less than 280.0 g.

Watch Solution

Why are these answers different? Which (if any) is more correct? Why?

Watch Solution

b. Now use the following data to calculate the number of minutes in a month: 24 hours per day, 60 minutes per hour, 7 days per week, and 4 weeks per month.

Watch Solution

a. There are 365 days per year, 24 hours per day, 12 months per year, and 60 minutes per hour. Use these data to determine how many minutes are in a month.

Watch Solution