Matter

Matter

Let's keeping talking

Entrance question: Mr. Weaver showed his students a cool demonstration. When he placed a can of diet soda in a tank of water, it did not sink to the bottom because the diet soda is ______ than water?

• A) more dense

• B) sweeter

• C) heavier

• D) less dense

Important Vocabulary

• State: is another physical property of matter

  
  

• Solids, liquids, and gases are the common state of matter

• Ice is a solid. A solid has a definite shape and takes up s definite amount of space. A solid stays in a definite shape with a definite volume no matter what container it is in. The particles of matter in a solid are packed together tightly and vibrate in place. Often they are packed in a regular pattern.

• Volume: is a measurement of how much space an object takes up.

• Volume of liquids are often measured in Milliliters (ml) by using a graduated cylinder, a beaker, or a measuring cup.

Physical Properties: Mass and Weight

Mass: is the amount of matter in an object. All matter is made of tiny particles. In general the more particles an object has, the more mass it has. (example: think about holding a golf ball and a table tennis ball. They are about the same size, but the golf ball feels heavier. The golf ball is made up of more particles.)

Matter is anything that takes up space and has mass.

The water you drink, the air you breathe, and you are all made of mater

Weight

Weight: is how strongly gravity pulls on an object. If an object has more more mass, it also has more weight. In places where gravity is stronger, such as jupiter, and object will weigh more. The mass of that same object, however, will be the same whether it is on Earth or on Jupiter. The mass stays the same because the amount of matter in the object does not change.

Mass

Mass stays the same under other circumstances too. A material's mass does not change if you cut it up or change its shape.

Density:

Density: is the measure of how closely packed an object's particles are. It shows the relationship between mass and volume. If you add more marbles to the bag, the marbles become more closely packed. The density of the bag increases. Take marbles out, and the density of the bag decreases.

Liquid

• A liquid: has a definite volume, but it does not have a definite shape. It can be poured from one container to another. Whatever shape the container is, the liquid fills that shape from the bottom up. In general, the Particles of a liquid are less tightly packed than those in a solid. The particles can move and slide past one another.

Ice turning into water

Gas

The air that makes up the atmosphere is a Gas. Gases have no definite shape or volume. The particles in a gas are farther apart than those of solids or liquids, and they can move around each other very easily . Gases spread out and completely fill a closed container. If you make the container bigger, the gas will expand to fill it. That is why you can inflate a balloon with air.

Question: When you blow up a balloon, breathing gas into it, the gas takes the shape of the balloon. Which of the following is true abut gases?

• A) Gases have no definite shape or size

• B) Gases have a definite shape but no definite size.

• C) Gases have no definite shape but have a definite size

• Gases have a definite shape and size.