Mastering Density Through Practice Problems

This video tutorial by Kelly covers a range of practice problems related to density. It begins with an introduction to density and its formula, followed by examples of solving for volume and mass. The video also explains the displacement method for finding the volume of irregular objects and discusses how to determine if an object will sink or float in water. A challenge problem involving the density of a star is presented at the end. Throughout the video, viewers are encouraged to pause and try solving problems on their own before seeing the explanations.

What is the main topic of this video tutorial?

• Introduction to chemical reactions

• Practice problems on density

• Physics experiments

• Advanced calculus problems

How do you rearrange the density formula to solve for volume?

• Volume equals density times mass

• Volume equals mass divided by density

• Volume equals density divided by mass

• Volume equals mass plus density

What is the volume of 116 grams of oil with a density of 0.0925 grams per milliliter?

• 1,200 milliliters

• 1,254 milliliters

• 1,160 milliliters

• 1,250 milliliters

How do you calculate the mass of an object using the density formula?

• Mass equals volume divided by density

• Mass equals density times volume

• Mass equals density divided by volume

• Mass equals volume plus density

What is the mass in carats of a diamond with a volume of 3.2 cubic centimeters and a density of 3.51 grams per cubic centimeter?

• 60 carats

• 50 carats

• 52 carats

• 56 carats

What method is used to calculate the density of irregularly shaped objects?

• Volume addition method

• Density addition method

• Volume displacement method

• Mass subtraction method

If an object raises the water level in a graduated cylinder from 20 mL to 25 mL, what is its volume?

• 5 milliliters

• 25 milliliters

• 20 milliliters

• 10 milliliters

What is the density of a baseball with a mass of 145 grams and a volume of 33.782 milliliters?

• 5.29 grams per milliliter

• 2.29 grams per milliliter

• 3.29 grams per milliliter

• 4.29 grams per milliliter

What is the formula for the volume of a sphere?

• Volume equals pi r squared

• Volume equals 4/3 pi r cubed

• Volume equals 3/4 pi r cubed

• Volume equals 2 pi r

How do you convert the radius from kilometers to centimeters?

• Multiply by 10^3

• Multiply by 10^5

• Multiply by 10^10

• Multiply by 10^7