Bell Ringer 1 – Take out a sheet of notebook paper and title it Bell Ringers. 2 – Put today’s date in left side margin of paper. 3 – Answer the following question: The scientific definition of matter is “anything that has mass and takes up space.” How would you explain what matter is (in your own words) to a 10 year old?
Intro to Matter (Page 74) Essential Question: How do we know for certain that all things are made up of matter? https://www.youtube.com/watch?v=SB8mph4d-AA
Matter - Anything that has mass and takes up space (the STUFF all things are made of – solids, liquids, and gases)
*How do we measure matter?
1. Mass *The amount of matter (stuff) in an object or substance – solid, liquid, gas
Lets make some measurements
2. Weight *The force of gravity pulling on an object *measured in Newtons (N) or kilograms (kg) **Spring Scale is used to measure weight
*On Earth, mass and weight are equal measurements
*Weight can change, but mass stays the same!
Earth The Moon Mars Mass 150 lbs 150 lbs 150 lbs Weight 150 lbs 24 lbs 57 lbs 667 N 111 N 253 N https://www.youtube.com/watch?v=yoWQ36v1dlA
Intro to Matter – Part 2 Essential Question: How do we know for certain that all things are made up of matter?
3. Volume *How much space something takes up
How do we measure volume ? *Length x width x height 2 cm x 5 cm x 8 cm = 80 cm 3
How do we measure volume?
How do we measure volume? *Water Displacement Starting water level = 50 mL Ending water level = 59 mL Volume = 9 mL
Let’s make some measurements
Intro to Matter – Part 3 Essential Question: How do we know for certain that all things are made up of matter?
4. Density *How much mass is in a given amount of volume (Density = Mass ÷ Volume)
*How much stuff is packed inside the space the object/substance takes up
Density 3 0.4 g/cm 1.5 g/cm 3
Density Mass = 2000g Volume = 5000 mL 3 3 Density = 2000g / 5000 cm = 0.4 g/cm Mass = 2000g Volume = 5000 mL
Density Mass = 7500g Volume = 5000 mL 3 3 Density = 7500g / 5000 cm = 1.5 g/cm Mass = 7500g Volume = 5000 mL
A granite rock has a mass of 275 g and a volume of 100 c³ A granite rock has a mass of 275 g and a volume of 100 c³. What is it’s density? D = M ÷ V 275 ÷ 100 D = 2.75 g/cm³
100 mL of Coca Cola has a mass of 104. 5 g 100 mL of Coca Cola has a mass of 104.5 g. What is the density of the Coca Cola? D = M ÷ V 104 5÷ 100 D = 1.045 g/cm³
What causes an object to float on water instead of sinking?
Water has a density of 1g/cm 3 Objects with a lower density than water will float, with greater density will sink
If coca cola was poured into a container of water, would the cola float on, or sink in the water? D = 1.045 g/cm³
0.9 g/cm³ 1 g/cm³ 1.4 g/cm³
WHY?
How is a hot air balloon able to fly?
Quick Write: How do we know for certain that all things are made up of matter?