Chapter 3 Matter by kylevu406

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Slide Notes

Chapter 3 Matter

Published on Nov 21, 2015

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PRESENTATION OUTLINE

CHAPTER 3 MATTER

KYLE VU

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Matter
Matter is anything that has mass and takes up space. For an example of matter is air, potato's, water, and etc..

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MATTER AND VOLUME

Volume is the amount of something. For an example, if there is a full row of books on a rack, and you can not put one more book because the books are made out of matter, and they filled up the rack, so there would be no space for one more book.

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Liquid Volume

The liter (L) is the SI unit for volume. Each little drop of water that drops in a bottle can expressed in liters, or milliliters. You can estimate the volume of a can by using a cup to measure the amount of liquid that the can be held.

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Measuring the Volume of a Liquid

Usually in class we use a graduated cylinder instead of a measuring cup to find the volume of liquid. When using a graduated cylinder, you can measure water more accurately. After you are done pouring the liquid in your graduated cylinder, you will see a curve at the surface. This is called a meniscus.

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Volume of a Regularly Shaped Solid

The volume of any solid object is expressed in cubic units. In cubic meters it is (m3) and in cubic centimeters it is (cm3). To find the volume of a shaped object is length x height x width. To find the volume of a cube is area x height. To find the volume of an irregular shaped solid object is by using water displacement.

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Measuring Mass and Weight

The SI unit of mass is the kilogram (kg). Mass is also expressed as grams and milligrams. Weight is the measure of gravitational force. One newton is equal to the weight on Earth of an object whose mass is about 100g.

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Identifying Physical Properties

A physical property is a characteristic that can be observed or measured without changing the matters identity. For example, you can see an apple' color or measure an apple's volume without changing the apple's identity. Other physical properties such as magnetism, electrical conductivity, strength, and flexibility can help you identify ways to use a substance.

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Density

Density is a physical property that defines the relationship of the mass and the volume. Density is the amount of matter in a given space or volume. To find the objects density, you do mass divided by volume. The density units are usually used as grams per milliliter. If the density is lower than 1 the object can float. If the density is higher than 1 the object can't float.

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Reversibility of Physical Change

Because physical changes do not change the identity of a substance they are sometimes easy to undo. Imagine you messed up on pounding a piece of gold to make a heart shape, but because the identity of the gold does not change, you can pound your gold and form the gold back to its original shape.

Identifying Chemical Properties

Chemical property defines matter based on its ability to change into new matter, or matter whose identity differs from the identity of the original matter. Reactivity is the ability of a substance to change into one or more new substances. A kind of reactivity is flammability. Flammability is the ability of a substance to burn.

Characteristic Properties

Properties that are most useful in identifying a substance are called characteristic properties. Characteristic properties, such as density, or chemical properties, such as reactivity.

Signs of Chemical Changes

The signs of physical change is the color or odor, fizzing, and foaming, and sound or light being given off. Also chemical changes usually detach or absorb heat.

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