Activator Coke vs Diet Coke Watch the video

Activator Coke vs Diet Coke Watch the video and make observations about what is happening. Why do you think this is happening?

Density September 20, 2017

Objective Students will be able to calculate the density of a given substance.

Connection Today we are going to continue talking about properties of substances, and learn a new property called density.

Density is a relationship between mass and volume for a substance. The more mass an object has per unit of volume, the more dense it is. Reminder: density of CO 2 from dry ice

Calculating Density To calculate the density of a substance, you need to divide the mass by the volume. To be able to do this, you may need to first use a graduated cylinder to find the volume in m. L, and use a digital scale to find the mass in grams.

Practice Problem #1 Let’s find the density of water. Here are the steps we need to follow: 1. Measure out 50 m. L of water using a graduated cylinder. 2. Find the mass of the 50 m. L of water using a digital scale. 3. Using the formula density = mass / volume divide the mass (_____ g) by the volume (50 ml). 4. Write your answer with the correct units. In this case, it will be grams per milliliter, or g/m. L

Practice Problem #2 Let’s find the density of beads. Here are the steps we need to follow: 1. Find the mass of the beads by using a digital scale. 2. Find the volume of the beads by using displacement. 3. Using the formula density = mass / volume divide the mass (_____ g) by the volume (_____ ml). 4. Write your answer with the correct units. In this case, it will be grams per milliliter, or g/m. L

Practice Problem #3 Let’s find the density of a wood block. Here are the steps we need to follow: 1. Find the mass of the block by using a digital scale. 2. Find the volume of the block by using the formula length x width x height. 3. Using the formula density = m / v divide the mass (_____ g) by the volume (_____ cm 3). 4. Write your answer with the correct units. In this case, it will be grams per milliliter, or g/cm 3

Independent Work Solve the density problems on your worksheet. Make sure you are using the formula correctly! Density = Mass Volume Any problems you don’t finish are homework! Show your work!

Exit Ticket As a class, I want to create a mnemonic device to remember the formula for density. Everyone in class can use this to remember any time you are taking a quiz, test, etc. Homework Finish any density calculations that you did not complete in class.