Density — Definition & Calculation
Read this topicExplanations 5
- One property of matter that chemists frequently use to identify a substance is density. Density is defined as the substance's mass per unit of the substance's volume. To simplif…
By Catherine Yeo, Gabi Slizewska
- Density is a measurement of how much of something there is in a given volume. The term "density" most often refers to mass density\color{#c61a4d}{\text{mass density}}mass densit…
By Jasper Brown, Mario Janakis, Gabi Slizewska, Trisha
- Density is simply the amount of "stuff" per volume. Here, we'll use "density" to refer to mass density, or the amount of mass per volume in a material, though other types of den…
By Adrien, Gabi Slizewska
- (Video) What Is Density? by The Science Classroom Density is a measure of mass per given volume. In this video, you will learn how to calculate density using the formula density…
By Mario Janakis
- Density
By Tristan Gibbons
Problems 21
- A chemist measures out 17.0 cm3^33 of sodium polytungstate solution and finds that it has a mass of 51.0 grams. What is the density of the solution?
- Aluminum has a density of 2.7gmL2.7\frac{\text{g}}{\text{mL}}2.7mLg. If we have a 10 mL10\text{ mL}10 mL block of aluminum with a mass of 20 g20\text{ g}20 g, is the block pure…
- Aluminum has a density of 2.7gmL2.7\frac{\text{g}}{\text{mL}}2.7mLg. We have a block coated in aluminum. The block has a volume of 10 mL10 \text{ mL}10 mL and a mass of 27 g27\…
- Substance A has a density of 10 gmL10\text{ } \frac{g}{mL}10 mLg, and substance B has a density of 2 gmL2\text{ } \frac{g}{mL}2 mLg. If we have 5 g5 \text{ }g5 g of A, what vo…
- Select the least dense option
- An unknown substance has a density of 13.6 gmL13.6\text{ } \frac{g}{mL}13.6 mLg. How many grams are there if we have 5 milliliters of the substance?
- An unknown substance has a density of 8.7 gmL8.7 \text{ }\frac{g}{mL}8.7 mLg. How many milliliters are needed to have only 1 gram of the substance?
- The diameter of a helium nucleus is approximately 10−1510^{-15}10−15 meters. Calculate the charge density of the nucleus to 3 significant figures using units of em3\frac{e}{m^{3…
- 350 grams of sucrose (molar mass 342.3 gmol342.3 \text{ }\frac{g}{mol}342.3 molg)is placed into 500 milliliters of water. What is the number density of sucrose in the resulting…
- Things that are less dense than water will float on water. What is the most dense option listed?
- A lithium nucleus and a helium nucleus have approximately the same diameter. Which has a greater charge density?
- When a substance is more dense than water it will sink, and when it is less dense than water it will float. If a substance sinks in water, but floats in salt water, what does th…
- If a solute is added to a solvent, and the volume does not change, what can we say about the density?
- When something is more dense than water it will sink in water. Likewise, when something is less dense than water, it will float. This actually applies to any liquid. \\ Lets say…
- When fluids are placed into a column, they will arrange themselves into layers based on density. The most dense fluid will be on the bottom, and the least dense fluid will be on…
- Less dense substances float in denser substance. What does this say about the relative density of helium (found in a helium balloon) and air?
- Hot air balloons float by heating the air in a balloon. What does this say about the density of air?
- A 1 liter bottle of water (ignoring the mass of the container) weighs approximately 2.2 lbs. What is the density?
- Water has a density of about 1 g/cm3^{3}3. You have a cube of foam that measures 1 meter on each side and weighs 786 kg. Will it float?
- Aluminum has a density of 2.7 gmL2.7 \text{ }\frac{g}{mL}2.7 mLg. If we have 27 g27\text{ }g27 g of aluminum occupying 10 mL10\text{ }mL10 mL, how much more aluminum do we need…
- Water has a density of about 1 g/mL. A two liter bottle of soda has a mass of 2,000g. Is it more or less dense than water?