Density A quantitative physical property of matter A quantitative physical property of matter Which is heavier: a 12 inch bar of gold or a pillow full.

Slides:

Advertisements

Similar presentations

The idea of density.

Advertisements

Properties of Matter II

Everyone Ever Tell You are Dense? Well, you all are… Well, you all are… Because you all have these two properties You are made up of MATTER…which means.

Density SNC1D. What is Density? Density is a quantitative PHYSICAL property of matter.

Density A quantitative physical property. Density At the conclusion of our time together, you should be able to: 1.Define density 2.Calculate the density.

Density. Density= Mass Volume D= m V Mass Mass: Amount of matter in a substance. Don’t confuse with weight. Weight: the force with which the earth pulls.

Density. What is It? Derived unit which shows the mass per unit of volume More dense materials are “heavier” than less dense materials Density compares.

Physical Properties of Matter

Measuring Matter 6 Beta Measuring Matter Which weighs more, a pound of feathers or a pound of sand? Which weighs more, a pound of feathers or a.

Characteristic Physical Properties

1.To understand how density applies to some everyday situations 2.To look at floating & sinking with respect to density 3.To conduct a brief investigation.

Density- Cornell notes page 125. Density Physical property of matter amount of matter in a given amount of space. (amount of matter is called “mass,”

Density The make up and structure of all matter!!!

Grade Nine Science Properties of Matter II. The Plan for Today To do: –Get out your pencil or pen –Open your Textbooks to page 18 –Put your name and date.

Density Formula: Density = Mass ÷ Volume Standard Unit =

Aim: What is Density? Do Now:

Measurement-A Common Language Density, Time, & Temperature.

Measurement-A Common Language Density The measure of how much mass is contained in a given volume.

 A property that is unique to a substance and that can be used to identify the substance.  Freezing point  Melting point  Boiling point.

 Density is a measure of how much matter (objects that take up space) is compacted in an area.  What is the formula? Density = mass OR mass ÷ volume.

Which do you think would have the greater mass and greater volume? Why? 1 kg of rock 1 kg of feathers.

DENSITY… Will it sink or float??. Why do some things float… … and other things sink?

1. Which is more dense, water or wood? How do you know? 2. Which is more dense, 1 pound of lead or 100 pounds of lead? Wood, if it sinks in water. SAME!

Measurement-A Common Language Density, Time, & Temperature.

WHAT IS DENSITY One of the most important physical properties of a substance is its density, or what is mass per unit volume. The property of density may.

WU 9/7 1.How many sig. figs are in these measurements? a) g b L c mg d e s 2.Perform the following calculations:

Density The make up and structure of all matter!!!

Physical properties of matter

Density. Vocabulary Proportional Inversely proportional Ratio.

Introduction to Matter Lecture: Calculating Density.

Grade Nine Science.

Unit 3 Lesson 3 Part 1 – Density Overview Remember Matter? 0 Matter – anything that has mass and takes up space.

Density is defined as mass per unit volume. It is a measure of how tightly packed and how heavy the molecules are in an object. Density is the amount of.

Density DEF: amount of mass in a certain volume. Density is a physical property. Solids have the highest density. Gases have the lowest density. The density.

Aim: What is Density? Do Now: 1)In your notebooks, describe how to find the density of an object (formula) and explain why cutting an object doesn’t change.

Aim: What is Density? Do Now: In your notebooks, explain what you think determines an objects density? And then, try to explain how you would find an objects.

What is Density? Objects with the same volume but different mass have different densities. Density is a characteristic property of a substance. The density.

Density. Which weighs more? Which one of these weighs more??? A kg of bricks or a kg of feathers? Both of the objects are 1 kg… so they both weight the.

Chapter 2.6 What is density?.

Density Notes. What is density? How much mass is in a volume How much matter is in a given space How compact particles are in a space Which is more dense?

Density The make up and structure of all matter!!!

Density Sink or float?. What is Density? Defined as the amount of matter (mass) within a certain amount of space (volume) Represented by the following.

Density Chapter 5 Section 2. Density A physical property that describes the relationship between mass and volume The amount of matter in a given space.

Density The property of density is intensive and is the measure of the ratio of an objects mass to its volume. Density is a physical property of matter.

Which do you think would have the greater volume and mass? Why?

Objective: How is density determined?

Density PG. 17.

DENSITY Density is defined as mass per unit volume. It is a measure of how tightly packed and how heavy the molecules are in an object. Density is the.

Measuring Matter 2.2 Weight and Mass

Density- notes page 21 Essential Question: How do we explain density?

Density- Cornell notes page 21

Measuring Matter Chapter 2 Section 2.

Will it Float or Sink? Density.

Which do you think would have the greater volume and mass? Why?

Which do you think would have the greater volume and mass? Why?

The make up and structure of all matter!!!

Mass, Volume, & Density.

Which do you think would have the greater volume and mass? Why?

The amount of matter (mass) in a given space (volume)

Which do you think would have the greater volume and mass? Why?

Density Pre-Lab.

Which do you think would have the greater volume and mass? Why?

What weighs more a ton of bricks or a ton of feathers?

Presentation transcript:

Density A quantitative physical property of matter A quantitative physical property of matter Which is heavier: a 12 inch bar of gold or a pillow full of feathers? Which is heavier: a 12 inch bar of gold or a pillow full of feathers?

A 12 inch bar of gold weighs more than a pillow full of feathers even though the pillow takes up more space? Why? A 12 inch bar of gold weighs more than a pillow full of feathers even though the pillow takes up more space? Why? Gold is more dense. It has more matter per unit volume. Gold is more dense. It has more matter per unit volume.

is the amount of matter per unit volume of that matter. Density is the amount of matter per unit volume of that matter. Density (D) = Mass (m) / Volume (V ) If you know any two of the three variables (D, m, V), you can solve for the third. If you know any two of the three variables (D, m, V), you can solve for the third. m = DVV = m / D

Sample density question #1 If a rock has a mass of 49 g and occupies a volume of 7 cm 3, what is the density? If a rock has a mass of 49 g and occupies a volume of 7 cm 3, what is the density? D = m / V = 49 g / 7 cm 3 = 49 g / 7 cm 3 = 7.0 g/ cm 3 = 7.0 g/ cm 3

Solve these sample density questions 1. An object has a mass of 250 g and occupies a volume of 14.5 cm 3, what is the density? 2. A piece of wood occupies a volume of 46 cm 3 and it has a mass of 100 g. What is the density of the wood? 3. An unknown metal has a density of 2.6g/cm 3 and a mass of 15 g. How much volume does this piece of meal occupy. 4. A sample of a particular liquid has a density of 6.85 kg/L and it occupies a volume of 3.4 L. How much does this particular sample weigh?

Approximate Densities of Some Common Materials SubstanceDensity Kg/m 3 g/cm 3 Gold Silver Aluminum Ice Wood (birch) Distilled Water

Water is denser than ice! Why is this so important? Why is this so important? It means that ice floats in water instead of sinking. Think of the poor fish if this was not the case. It means that ice floats in water instead of sinking. Think of the poor fish if this was not the case. Why is ice less dense than water? Why is ice less dense than water? When water freezes, it expands which means that the same mass of water is spread over a greater volume. When water freezes, it expands which means that the same mass of water is spread over a greater volume.