We wrapped up our Weather and Water Cycle Unit and have begun learning about matter.
No tests scheduled this week.
Here are the new vocabulary words and definitions
Vocabulary Matter/Changes in Matter
Matter—Anything that takes up space and has mass.
Element—a pure substance that cannot be broken down into simpler substances by chemical reactions
Atom—the smallest unit of an element that has the properties of that element
Molecule—two or more atoms joined together
Property—a characteristic or quality of a material or substance. These properties include: mass, volume, density, shape, color, hardness, texture, odor, taste, attraction to magnets and temperature.
Mass—The amount of matter a substance or object has.
Volume—The amount of space an object or substance occupies.
Density—a measure of how many particles are packed together into a certain amount of space
State of matter—The form matter can take (e.g., solid, liquid, gas).
Solid—matter with a fixed volume and shape
Liquid—a state of matter with a defined volume but no defined shape
Gas—a state of matter without any defined volume or shape
Change of State - the process of changing (by heating or cooling) one form of matter into another form of matter with different characteristics
Physical change—A type of change that involves the physical properties of a substance.
Chemical Change—a chemical reaction; a process that changes a substance into new substance
Mixture—a combination of substances that can be physically separated from one another
Dissolve—to add a solid material to a liquid in such a way that its particles completely disperse into the liquid, usually becoming invisible within the liquid
Solution—a mixture in which a solid and a liquid or two liquids are mixed so evenly, that it is not possible to see the separate particles
Suspension—a heterogeneous mixture in which fine particles are suspended in a liquid or gas where they are supported by buoyancy
Solubility—the ability of a substance to be dissolved in a liquid
