Student Planner March 21 Place this in the proper place Final notebook collection the next Monday we meet. Make up low notebook grades

Summary: We had a standard opening. We worked on chapter 7.1 and 7.2 in the workbook

An object will float if its weight is equal to WHAT? Answer the EQ which was: Essential Question An object will float if its weight is equal to WHAT?

Essential Question: How do you get the density of a LIQUID? Topic/Objective: Name: Density Lab 3 Class/Period: Date: Mar 21, 2016 Essential Question: How do you get the density of a LIQUID?

a. Students know density is mass per unit volume Science Standard 8 All objects experience a buoyant force when immersed in a fluid. As a basis for understanding this concept: Objective: a. Students know density is mass per unit volume b. Students know how to calculate the density of substances (regular and irregular solids and liquids) from measurements of mass and volume. c. Students know the buoyant force on an object in a fluid is an upward force equal to the weight of the fluid the object has displaced. d. Students know how to predict whether an object will sink or float.

Warm Up

1. The volume of a liquid is 10 ml the mass of the liquid in the graduated cylinder is 54 g. How do you get the mass of the liquid?

2. Before you put the liquid into the graduated cylinder, you weighed it at 40 g. The total of liquid and grad cylinder’s mass was 50g. What was the mass of the liquid?

3. Volume of the liquid = 10 ml Mass of cylinder and liquid = 50 g Mass of cylinder = 40 g. What is the density of the liquid?

4. Liquid density. A. 2g/ml. B. 1. 5 g/ml. C. 4 g/ml. D. 3. 5 g/ml. E 4. Liquid density A 2g/ml B 1.5 g/ml C 4 g/ml D 3.5 g/ml E 1.0 g/ml List in order (bottom up) how the liquids would line up if put together.

Answers

1. The volume of a liquid is 10 ml the mass of the liquid in the graduated cylinder is 54 g. How do you get the mass of the liquid?

1. The volume of a liquid is 10 ml the mass of the liquid in the graduated cylinder is 54 g. How do you get the mass of the liquid? Subtract the mass of the cylinder from the 54g. Total weight – Tare weight = Net weight

2. Before you put the liquid into the graduated cylinder, you weighed it at 40 g. The total of liquid and grad cylinder’s mass was 50g. What was the mass of the liquid?

2. Before you put the liquid into the graduated cylinder, you weighed it at 40 g. The total of liquid and grad cylinder’s mass was 50g. What was the mass of the liquid? 50g-40g = 10g

3. Volume of the liquid = 10 ml Mass of cylinder and liquid = 50 g Mass of cylinder = 40 g. What is the density of the liquid?

3. Volume of the liquid = 10 ml Mass of cylinder and liquid = 50 g Mass of cylinder = 40 g. What is the density of the liquid? m/v = d m=50g-40g (Total – tare = net weight) m=10g 10g/10ml = 1g/ml

4. Liquid density. A. 2g/ml. B. 1. 5 g/ml. C. 4 g/ml. D. 3. 5 g/ml. E 4. Liquid density A 2g/ml B 1.5 g/ml C 4 g/ml D 3.5 g/ml E 1.0 g/ml List in order (bottom up) how the liquids would line up if put together.

4. Liquid density. A. 2g/ml. B. 1. 5 g/ml. C. 4 g/ml. D. 3. 5 g/ml. E 4. Liquid density A 2g/ml B 1.5 g/ml C 4 g/ml D 3.5 g/ml E 1.0 g/ml List in order (bottom up) how the liquids would line up if put together. C-D-A-B-E

Homework Make up low notebook grades. Fasten ALL papers into notebook. Make up all missing work.

Workbook pages 47-53 should be completed Today’s Work Density of liquids lab Work on finishing workbook chpt 7 sections 1 & 2 Workbook pages 47-53 should be completed

Density Lab 3 Instructions: Get the mass of the graduated cylinder Add 5 ml of liquid to cylinder, then get mass Subtract tare from total for net mass. Calculate density.

Water Alcohol Vinegar Karo Syrup Vegetable oil

Karo Syrup 8.0 g Vegetable oil 8.0g

Quizzie Box = 2 oz Cereal = 12 oz Tare = Total = Net =