Unit 7 - Calculate Derived Units Students will learn to differentiate between base units and derived units. In addition, students will be able to perform.

Slides:

Advertisements

Similar presentations

Making Measurements in Science

Advertisements

Chemistry: SI Units & Conversions

When you get a question right, click a shell to reveal your score.

Measurement Measurement  SI Standard System of International Units or Metric System  Uses 10 as a base  Always estimate one unit/place further than.

DOES THIS MAKE SENSE TO YOU? THE METRIC SYSTEM The metric system is a system of measurement that is based on the number ten It is often used in science.

Measurement and Significant Figures

A Look at Density and How to Calculate It.

How to Calculate Density

Measurements and Calculations Chapter 2. Units of Measurement Measurements involve NUMBER and UNIT Represent a quantity: has magnitude, size, or amount.

Scientific Measurement

Measurement Ch.1.

Metric System Review. What is the system of measurement used in science by most people of the world?

Tools for Measuring some Physical Properties of Matter Fill in your vocabulary map with the following information!

I. MEASUREMENTS A. ALL MEASUREMENTS MUST HAVE TWO PARTS 1. A NUMBER

Measuring Matter Chemistry is the study of matter and all its changes.

Systéme International d’unités (SI) International System of Units otherwise known as the metric system....

The Metric System A way of measuring based on multiples of 10.

Class Notes 3: The Metric System Always use the Metric System in science!

 Standard measure of a quantity  Examples › Length = Meter (m) › Volume = Liter (L) › Mass = Grams (g) › Temperature = Celcius (°C)

The Metric System Is used in nearly every country around the world. The United States of America doesn’t use the metric system for it’s primary measurement.

Measurement The International System of Units (SI) is the standard system used around the world.

Density Density describes how heavy an object is compared to its size.

Length What is it? Distance from one point to another Unit(s) of measurement Meter (m) - basic unit cm smaller things mm km - bigger things Tools Metric.

Volume, Mass, and Density Matter is anything that has mass and takes up space. Mass is a measure of how much matter is in an object. Mass can be expressed.

Measurements. The Metric System OH NO! The Metric System! OH NO! The Metric System! People visiting other countries from the US seem to be scared to death.

Measurement Quiz Review. What is the term for the amount of space an object occupies? VOLUME.

Measurement Review Stuff you should know…. Measurement Important to measure accurately: –Communicate information –Reliable results –Real Life!

Measuring density Thursday 9/17/09. What density is and how to measure it What we will learn…

The Metric System. What is the Metric System?  The metric system is a system of measurement that is based on the number ten  It is often used in science.

Topic: Chemistry Aim: Describe the difference between elements and compounds. Do Now: Bottom of Atoms reading notes HW: Ditto - Measuring Mass and Volume.

Metrics and Measurement kilohecto deca BASE UNITdecicentimilli (K) (h) (da) meter (m) (d) (cm) (mm) gram (g) liter (L) 1 *Hint: 1.

SI Base units Length in meters (m) Mass in grams (g) Volume in liters (l) or meters cubed (m 3 ) Time in seconds (s) Temperature in degrees Celsius (°C)

The Standard Measurement System

Data Analysis Applying Mathematical Concepts to Chemistry.

Chemistry by the numbers Units of Measurement – The Metric System Length: Mass: Volume: Temperature: Pressure: milli-centi-deci-(unit)deka-hecta-kilo-

The Metric System A Review of Measurement & The Metric System.

Measurement in Metrics AC Science. Metric System Systems Internationale Systems Internationale AKA “SI” AKA “SI” Based on factors of 10 Based on factors.

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.

Data Analysis Applying Mathematical Concepts to Chemistry.

SPI Density What is density?  Density is the amount of matter (mass) you have crammed in a given space (volume) Reminder: mass is how much matter.

Introduction to Science. Objectives: 1. Identify tools used to collect and analyze data. 2. Explain the importance of the International System of Units.

Measurement Chart MeasurementToolUnits. Temperature Tool - thermometer Units – Celsius ( o C)

Chapter 2 Measurement and Calculations GHS R. Krum.

Measurement Chapter 2. Units in Lab In lab we cannot always measure in SI units. In lab we cannot always measure in SI units.Mass Grams (g) Volume Milliliters.

Mrs. Howland Chemistry 10 rev Which has greater mass? 100 kg of lead or 100 kg of feathers?

Measuring Matter Chapter 14-2 pp Why do scientists measure matter? Measuring matter is another way scientists can describe matter. Measuring.

Aim: How can instruments give us numerical values? Tools to help us extend our senses. What are some examples of instruments scientists use to extend their.

Unit Conversion of Measurements. Derived Unit A derived unit is a combination of the base units such as area (_m 2 _), volume, pressure, weight, force,

SI System International System of Units Taking Measurements.

Matter has mass and volume.. Describe what matter is and demonstrate how to measure mass.

Density Most Dense Less Dense Least Dense.

Unit 7 - Calculate Derived Units

Measurement “The most remarkable discovery ever made by a scientists was science itself.” Jacob Bronowski.

Chapter 2 SI Units part I SI Units.

Do Now Skim through lesson 1.1 and write down 2 new facts that you want to learn more about.

Measurement & Calculation

International System (SI) of Measurement

Name That Tool Q. What is the name of this measurement tool? A. triple beam balance.

Properties of Matter.

International System (SI)

Measurement: Tools and Units

#4 Notes : METRIC AND MEASUREMENTS/ Basic Math Tools

MEASURING MATTER.

Tools, Measurement, and Safety

A Look at Density and How to Calculate It

Aim: How can I calculate density of an irregular object

Scientific Measurements

Standards for Measurement

Density What is density?.

Presentation transcript:

Unit 7 - Calculate Derived Units Students will learn to differentiate between base units and derived units. In addition, students will be able to perform mathematical operations to determine the density of an object.

Basic units Measure distance in METERS (m, cm, km). Measure volume (most of the time) in LITERS. Measure time in SECONDS (s, ms). Measure mass in GRAMS (mg, g, kg). In this class, we will consider a unit “BASIC” if we can measure it directly with one of our available instruments like a ruler or stopwatch.

Mass & Volume In chemistry, two rule are true for all matter: #1. Composed of atoms (has mass) #2. Takes up space (has volume) In your notes, take a second to describe what MASS and VOLUME mean in your own words.

Derived units In the lab, some measurements cannot be obtained directly. Instruments that can measure these values may be too expensive or impractical to use. Therefore, we're going to have to learn how to figure these things out ourselves...

Derived units Derived units are found by MULTIPLYING and/or DIVIDING basic units together. In other words, you have to solve a math problem to figure them out. Ex: cm x cm x cm = cm 3 (volume of a solid) Ex: m ÷ s = m/s (speed)

Checkpoint Which of these things is a DERIVED UNIT? a. Temperature in degrees Celsius ( ° C) b. Distance traveled in meters (m) c. Square footage of a house (ft 2 )

Derived Measurement: Density There's only one thing I want you to learn how to derive today. Its called DENSITY. “The ratio of an object's mass to its volume” - that's what the textbook says density means.

Figuring out density Step #1: Determine the object's mass using a scale or triple-beam balance. Mass is measured in GRAMS. Step #2: Determine the volume using a graduated cylinder or by doing L x W x H. Volume is measured in MILLILITERS or CM 3. Step #3: Compare the object's mass to how much space its taking up using DIVISION. This tells you the density.

Example problems Lets do these problems together in your notes... DON'T FORGET ABOUT SIGNIFICANT FIGURES!! Recycled aluminum cans are smashed into cubes that are 10.cm 3 with a mass of 27g. What is the density? What is the density of approximately 50mL of water with a mass of 49.2 grams?

Checkpoint The mass of a metal block is 120. grams. The size of the block is 6.00 cm 3. What is the density of the metal block? a. 20 g b cm 3 c. 20 g/cm 3 d g/cm 3