Ch 16: Properties of Matter Mrs. Neistadt Physical Science
Notes Chapter 16.1*What is Matter?*Matter is a term used to describe anything that has mass and takes up space.
Classifying Matter• *Matter is divided into two categories: mixtures and substances.• *Mixtures contain more than one kind of matter. – For example: Cola is a mixture of carbonated water, corn syrup, caramel color, phosphoric acid, natural flavors and caffeine.
Two Types of Mixtures• *A Homogeneous Mixture is the same throughout. – Examples: unopened cola, gasoline, peanut butter• *A Heterogeneous Mixture has differences throughout a sample. – Examples: chicken noodle soup, salad, rocky road ice cream
What is a Substance• *A Substance cannot be separated into different kinds of matter by physical methods. (sorting, filtering, heating, cooling) – Example: table salt (sodium + chlorine) – *A substance that contains only ONE type of matter is called an Element. • Sodium is an element, as is chlorine
How can we determine the amount of matter in a rock?1. Measuring the mass of the rock on a balance2. Measuring the volume of the rock by using displacement technique
Notes Chapter 16.3DQ: What are the four states of matter? (hint: pg 292)SolidLiquidGasPlasma
Molecules and Atoms• *A Molecule is the smallest part of a compound that retains its properties.• *An Atom is the smallest part of an element.• Atoms are more than a trillion times smaller than what we can see with a microscope.
Atoms are always moving• *At higher temperatures there is more energy- so atoms move faster• *At lower temperatures there is less energy- so atoms move slower• *Temperature influences the changes of state of an atom or molecule.
States of Matter• *Solid- retains its shape and size; Molecules vibrate, but cannot change position.
States of Matter• *Liquids- has a definite volume, but no definite shape; molecules can move over and around each other and will fit into whatever container its poured into.
States of Matter• *Gas- has no definite size or shape; molecules float around freely and will spread out evenly throughout the container
States of Matter• *Plasma- atoms heated to such high temperature they lose their outer layer of electrons. Not often found on Earth, but makes up 99% of matter in the universe.
Create a GraphHomogenous Heterogeneous Molecule ElementMixture Mixture