Chapter ? SPI 0807.Inq.2-4 SPI 0807.9.1 SPI 0807.9.6 What is Matter? Chapter ? SPI 0807.Inq.2-4 SPI 0807.9.1 SPI 0807.9.6

Today’s Goals: Explain that matter takes up space and has mass. By the end of class today, you should be able to… Explain that matter takes up space and has mass. Determine which tools would be best to successfully measure an object’s volume, mass, and weight. Describe the following key terms: Volume, Mass, Weight, Matter.

What’s your prediction? Is it matter? DOG

What’s your prediction? Is it matter? TIME

What’s your prediction? Is it matter? SOUND

What’s your prediction? Is it matter? TREE

What’s your prediction? Is it matter? ENERGY

What’s your prediction? Is it matter? ICE

Is air matter? Does air have mass? Does air take up space?

All matter takes up space. What is matter? Matter is anything that… 1. Has mass 2. Takes up space (volume) 3. Made up of tiny particles called atoms All matter takes up space. And…no two objects can be in the same place at the same time.

Know the lingo… Weight Mass Volume the amount of matter in an object Matter—anything that has mass, has volume, and is made up of atoms Weight Volume Mass the amount of space an object takes up the amount of matter in an object the gravitational force on an object (how heavy it is) Liquid = Measured in liters (L) and milliliters (mL) Solid = Measured in cm³ Graduated cylinder is used to measure volume. The curved surface is called the meniscus. Measured in grams (g) Triple-beam balance Always constant Measured in Newton (N) Spring Scale Can change depending on location

Recognize that all matter consists of atoms. Compare the particle arrangement and type of particle motion associated with different states of matter.

Definite shape and volume Particles are very close Particles have a strong attraction Changes shape but not volume Particles slide past each other Overcome some of the attraction Changes shape and volume Particles move fast. Less attraction between particles

Observe the particle arrangement of the solid, liquid, and gas.

All About Solids… Crystalline (diamonds, ice) Amorphous (glass, rubber, wax)

All About Liquids… Liquids have unique characteristics. Surface Tension: a force that acts on the surface of particles (water drops) Viscosity: the resistance to flow (Honey has a higher viscosity than water.)

A change of State… A change of state is the change of a substance from one physical form to another physical form. The identity does not change. The particles move differently in each state. Example: Particles of a gas have more energy than particles of a liquid or solid.

Energy is added to melt the ice. Melting: Definition: solid to liquid Energy: added Particles: move faster Type of Change: Endothermic Energy is added to melt the ice.

Energy is removed so the water can freeze. Freezing: Definition: liquid to solid Energy: removed Particles: slow down Type of Change: Exothermic Energy is removed so the water can freeze.

Evaporation: (Boiling) Definition: liquid to gas Energy: added Particles: move quicker Type of Change: Endothermic Energy is added to make the water a gas.

Energy is removed to make the gas a liquid. Condensation: Definition: gas to liquid Energy: removed Particles: slow down Type of Change: Exothermic Energy is removed to make the gas a liquid.

Energy is added to turn the solid to a gas. Sublimation: Definition: solid to gas Energy: added Particles: move faster Type of Change: Endothermic Energy is added to turn the solid to a gas.