Bellringer

PHYSICAL PROPERTIES

PHYSICAL PROPERTIES Read along and fill in the words I leave out Suppose you want to know whether or not a substance is a metal. One way to find out is to compare the substance’s physical properties to those of substances that you know are metals. A physical property is a characteristic of a substance that can be observed without changing it into another substance. Examples of physical properties include shininess, hardness, ability to attract a magnet, and the ability to dissolve in water, or solubility.

PHYSICAL PROPERTIES Read along and fill in the words I leave out You probably already know some of the physical properties of metals. Metals are shiny. They are flexible, meaning that they can be bent into different shapes without breaking. They can conduct both thermal energy and electricity. If your substance has all of these properties, it is a metal. To find out which metal your substance is, you could compare its physical properties to those of other metals. Finding the melting points, boiling points, density, or color could all work. For example, if your substance is yellow and has a density of 19.3 g/ml it is likely gold.

PHYSICAL PROPERTY A characteristic of a substance that can be observed without changing it into another substance.

PHYSICAL PROPERTIES Physical properties are one way that properties can be identified and classified. Physical properties are independent of the amount of the material present.

So………….. Question…….  Is mass a physical property that can be used to identify a material?  How about volume?

EXAMPLES OF PHYSICAL PROPERTIES THERMAL CONDUCTIVITY  The ability of a material to conduct (transfer) heat.

EXAMPLES OF PHYSICAL PROPERTIES DENSITY  The amount of matter in a given amount of space

EXAMPLES OF PHYSICAL PROPERTIES Solubility  The ability of a substance to dissolve in liquid.

EXAMPLES OF PHYSICAL PROPERTIES Magnetism  The ability of a substance to respond to a magnetic field

EXAMPLES OF PHYSICAL PROPERTIES Melting Point  The temperature at which a material melts

EXAMPLES OF PHYSICAL PROPERTIES Boiling Point  The temperature at which a material boils.

IDENTIFY THE PHYSICAL PROPERTY SHOWN IN THE PICUTRE BELOW

A CHARACTERISTIC OF A SUBSTANCE THAT DESCRIBES ITS ABILITY TO CHANGE INTO DIFFERENT SUBSTANCES CHEMICAL PROPERTY

Read along and fill in the word I leave out Some properties of matter can’t be seen or identified just by observation or touch. A chemical property is a characteristic of a substance that describes its ability to change into different substances. For example, a chemical property of fuels is that they can catch fire and burn. Wood, gas, and charcoal are all examples of fuels. When a fuel burns it combines with oxygen in the air and changes into the substances water and carbon dioxide. The ability to burn, or flammability, is a chemical property.

Read along and fill in the word I leave out One chemical property of iron is that it will combine slowly with water and oxygen to form a different substance, rust. Silver reacts with sulfur and air to form tarnish. In contrast, a chemical property of gold is that it does not react easily with oxygen or sulfur. Gold can keep its shininess and color forever.

Examples of chemical properties Flammability  The ability of a substance to burn

Examples of chemical properties Rusting (corrosion or tarnishing)  The ability of a substance to combine with water and oxygen to form a new substance, rust.

Chemical or physical property? Most metals conduct heat well

Chemical or physical property? Iron is attracted to a magnet

Chemical or physical property? Paper is burns when a flame is applied

Chemical or physical property? Water boils at 100 degrees celcius

Chemical or physical property? Copper rusts when water and oxygen are present