Big Idea 9: Changes in Matte r Grade 3 Topic V: Water Changing States SC.3.P.9.1 Office of Academics - Department of Science

Benchmarks Big Idea 9: Changes in Matter SC.3.P.9.1 Describe the changes water undergoes when it changes state through heating and cooling by using familiar scientific terms such as melting, freezing, boiling, evaporation and condensation. LAFS.3.RI.1.3 Describe the relationship between a series of historical events, scientific ideas or concepts, or steps in technical procedures in a text, using language that pertains to time, sequence, and cause/effect. LAFS.3.W.3.8 Recall information from experiences or gather information from print and digital sources; take brief notes on sources and sort evidence into provided categories. MAFS.3.MD.1.2 Measure and estimate liquid volumes and masses of objects using standard units of grams (g), kilograms (kg), and liters (l). (Excludes compound units such as cm^3 and finding the geometric volume of a container.) Note: Add, subtract, multiply, or divide to solve one-step word problems involving masses or volumes that are given in the same units, e.g., by using drawings (such as a beaker with a measurement scale) to represent the problem. (Excludes multiplicative comparison problems (problems involving notions of “times as much.”) Office of Academics - Department of Science

Changes in Water Office of Academics - Department of Science

States of Matter and their Properties Office of Academics - Department of Science Solid Has volume. Has mass. Has its own shape.

States of Matter and their Properties Office of Academics - Department of Science Liquid Has mass. Has volume. Takes the shape of its container.

States of Matter and their Properties Office of Academics - Department of Science Gas No definite shape. No definite volume. Takes the shape of its container.

What makes water change state? From a Solid to a Liquid. Office of Academics - Department of Science When you warm solid water it changes to a liquid. It melts. Ice is the solid state of water.

What makes water change state? Office of Academics - Department of Science When you warm liquid water, it evaporates. Water vapor is the gas state of water. From a Liquid to a Gas.

If heat energy DECREASES, a gas turns back into a liquid. Office of Academics - Department of Science When you cool water vapor, it changes to a liquid. It condenses. From a Gas back to a Liquid. What makes water change state?

From a Liquid to a Solid. If heat energy continues to DECREASES, a liquid turns back into a solid. Office of Academics - Department of Science What makes water change state? When you cool liquid water, it changes into a solid. It freezes.

Office of Academics - Department of Science What makes water change state? Click to watch Brainpop video: Changing Matter

Water Changing States The motion of the water particles depends on the amount of HEAT ENERGY. Heat energy can be increased (HOT), or decreased (COLD) Office of Academics - Department of Science

WATER Fact Office of Academics - Department of Science Water freezes at 32° Fahrenheit (F) or 0° on the Celsius scale.

WATER Fact Office of Academics - Department of Science Water boils at 212° Fahrenheit (F) or 100° on the Celsius scale.

Your are going to work as scientists to carefully observe water and learn how it changes. Take out science journals or paper for this lesson. Office of Academics - Department of Science Let’s Investigate: Water Changes

Office of Academics - Department of Science

What is the difference between water as a solid, a liquid, and a gas? Answer: In solids, particles are close together because there is less heat energy. Liquids have more heat energy so the particles are farther apart. Gases have even more heat energy and the particles are further apart than in the solids or the liquids. Division of Academics - Department of Science

Reflection Sammy sees a puddle of water on the playground in the morning. In the afternoon, the puddle of water is gone. 1.What happened to the puddle of water? 2.Why did this happen? Office of Academics - Department of Science