2.3 - Solids, Liquids, and Gases

The student will investigate and understand basic properties of solids, liquids, and gases. Key concepts include

a)  identification of distinguishing characteristics of solids, liquids, and gases;

• classify materials as to whether they are liquids, solids, or gases  Bloom's Level: Understand
• identify the phases of water and the uses of water in its various phases in the home and at school. Bloom's Level: Understand / Apply

b)  measurement of the mass and volume of solids and liquids; and

• measure the mass of solids and the volume of liquids in metric and standard English units. Bloom's Level: Apply

c)  changes in phases of matter with the addition or removal of energy.

• describe and identify examples of condensation, evaporation, melting, and freezing of water Bloom's Level: Understand
• examine and describe the transformation of matter from one phase to another, i.e., solid water (ice) to liquid (water) to gas (water vapor).  Bloom's Level: Understand
• conduct an investigation to observe the condensation of water. Bloom's Level: Understand / Apply
• design and conduct an investigation to determine basic factors that affect the evaporation of water  Bloom's Level: Create / Apply / Analyze

BIG IDEAS

Solids, liquids, and gases make up our environment and have specific properties.

UNDERSTANDING THE STANDARD

• All substances are made of matter.
• Matter is anything that has mass and takes up space.
• Solids have a defined shape and volume.
• Liquids have a definite volume and take the shape of the container.
• Gases will completely fill any closed container (take the shape of its container) and assume the volume of its container. (e.g., Helium gas put into a balloon takes the shape of the balloon because the balloon defines its shape.)
• Mass is a measure of the amount of matter.
• Weight is the measure of the gravitational pull on an object.
• Volume is the measure of the amount of space occupied by matter.
• Matter most commonly occurs in three phases: solids, liquids, and gases.
• Matter can change from one phase to another.
• When matter changes from one phase to another, these changes are referred to as physical changes.
• Changes from solid to liquid to gas require the addition of energy.

ESSENTIALS

Essential Questions:

·  What in your world is matter?

·  How can matter be measured?

·  How can matter be changed?

·  What are the physical properties of matter?

·  What are the characteristics of solids, liquids, and gases?

·  How can we measure the mass and volume of solids and liquids?

In order to meet this standard, it is expected that students will

• classify materials as to whether they are liquids, solids, or gases.
• describe and identify examples of condensation, evaporation, melting, and freezing of water.
• measure the mass of solids and the volume of liquids in metric and standard English units.
• examine and describe the transformation of matter from one phase to another, i.e., solid water (ice) to liquid (water) to gas (water vapor).
• conduct an investigation to observe the condensation of water.
• design and conduct an investigation to determine basic factors that affect the evaporation of water.
• identify the phases of water and the uses of water in its various phases in the home and at school.

KEY VOCABULARY

changing phase

classify

communicate

condensation

evaporation

experiment

freezing

gas

ice

liquid

mass

matter

melting

observe

precipitation

predict

properties

solid,

steam

volume

water

Updated: May 20, 2016