1 Chemical and Physical Properties and Changes2 Physical & Chemical Properties All substances have properties that w...
Chemical and Physical Properties and Changes
Physical & Chemical Properties All substances have properties that we can use to identify them. For example we can identify a person by their face, their voice, height, finger prints, DNA etc.. The more of these properties that we can identify, the better we know the person. In a similar way matter has properties - and there are many of them. There are two basic types of properties that we can associate with matter. These properties are called Physical properties and Chemical properties: Physical properties are properties of an element or compound that can be observed without a chemical reaction of the substance. Examples : A substance's color and density are physical properties. Chemical properties are properties of an element or compound in chemical reactions. For example, the fact that sodium reacts with water is a chemical property.
Physical Properties Physical properties: Properties that do not change the chemical nature of matter Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter.
Physical properties include: appearance texture color odor melting point boiling point density solubility and many others
Chemical Properties Chemical properties of matter describes its "potential" to undergo some chemical change or reaction by virtue of its composition. What elements, electrons, and bonding are present to give the potential for chemical change. It is quite difficult to define a chemical property without using the word "change". Eventually you should be able to look at the formula of a compound and state some chemical property. At this time this is very difficult to do and you are not expected to be able to do it. Chemical properties: Properties that change the chemical nature of matter Examples of chemical properties are: •heat of combustion •reactivity with water •PH
Physical Changes A physical change takes place without any changes in molecular composition. The same element or compound is present before and after the change. The same molecule is present through out the changes. Physical changes are related to physical properties since some measurements require that changes be made.
Chemical Changes Chemical change results in one or more substances of entirely different composition from the original substances. The elements and/or compounds at the start of the reaction are rearranged into new product compounds or elements. A CHEMICAL CHANGE alters the composition of the original matter. Different elements or compounds are present at the end of the chemical change. The atoms in compounds are rearranged to make new and different compounds.
Physical OR Chemical You Decide
PHYSICAL CHANGE OR CHEMICAL CHANGE?
GLASS BREAKING
PHYSICAL CHANGE OR CHEMICAL CHANGE?
HAMMERING WOOD TOGETHER
PHYSICAL CHANGE OR CHEMICAL CHANGE?
RUSTY OLD BIKE
MELTING BUTTER FOR POPCORN
PHYSICAL CHANGE OR CHEMICAL CHANGE?
SEPARATING SAND FROM GRAVEL PHYSICAL CHANGE OR CHEMICAL CHANGE?
PHYSICAL CHANGE OR CHEMICAL CHANGE?
ROTTING FOOD
PHYSICAL CHANGE OR CHEMICAL CHANGE?
MIXING KOOL-AID POWDER IN WATER
PHYSICAL CHANGE OR CHEMICAL CHANGE?
MOWING THE GRASS
PHYSICAL CHANGE OR CHEMICAL CHANGE?
CORRODING METAL
PHYSICAL CHANGE OR CHEMICAL CHANGE? BLEACHING YOUR HAIR
PHYSICAL CHANGE OR CHEMICAL CHANGE?
FIREWORKS EXPLODING
SQUEEZING ORANGES TO MAKE ORANGE JUICE PHYSICAL CHANGE OR CHEMICAL CHANGE?
PHYSICAL CHANGE OR CHEMICAL CHANGE?
FRYING AN EGG
POURING MILK ON YOUR OATMEAL PHYSICAL CHANGE OR CHEMICAL CHANGE?
BURNING LEAVES
PHYSICAL CHANGE OR CHEMICAL CHANGE?
MAKING SALT WATER TO GARGLE WITH
PHYSICAL CHANGE OR CHEMICAL CHANGE?
PHYSICAL CHANGE OR CHEMICAL CHANGE?
CREAM BEING WHIPPED
BURNT TOAST
PHYSICAL CHANGE OR CHEMICAL CHANGE?
PHYSICAL CHANGE OR CHEMICAL CHANGE?
FROZEN CHOCOLATE COVERED BANANAS
PHYSICAL CHANGE OR CHEMICAL CHANGE?
MELTING ICE CREAM
Check Your Answers!
PHYSICAL CHANGE
PHYSICAL CHANGE HAMMERING WOOD TOGETHER
CHEMICAL CHANGE RUSTY OLD BIKE
MELTING BUTTER FOR POPCORN
PHYSICAL CHANGE
SEPARATING SAND FROM GRAVEL
PHYSICAL CHANGE
CHEMICAL CHANGE ROTTING FOOD
PHYSICAL CHANGE
MIXING KOOL-AID POWDER IN WATER
PHYSICAL CHANGE
MOWING THE GRASS
CHEMICAL CHANGE?
CORRODING METAL
CHEMICAL CHANGE BLEACHING YOUR HAIR
CHEMICAL CHANGE
FIREWORKS EXPLODING
SQUEEZING ORANGES TO MAKE ORANGE JUICE
PHYSICAL CHANGE
CHEMICAL CHANGE
FRYING AN EGG
POURING MILK ON YOUR OATMEAL
PHYSICAL CHANGE
BURNING LEAVES
CHEMICAL CHANGE
MAKING SALT WATER TO GARGLE WITH
PHYSICAL CHANGE
PHYSICAL CHANGE
CREAM BEING WHIPPED
BURNT TOAST
CHEMICAL CHANGE
FROZEN CHOCOLATE COVERED BANANAS
PHYSICAL CHANGE
PHYSICAL CHANGE MELTING ICE CREAM
SUMMARY 1. Glass Breaking (PHYSICAL CHANGE) 2. Hammering Wood Together (PHYSICAL CHANGE) 3. A Rusting Bicycle (CHEMICAL CHANGE) 4. Melting Butter for Popcorn (PHYSICAL CHANGE) 5. Separating Sand From Gravel (PHYSICAL CHANGE) 6. Rotten Food (CHEMICAL CHANGE) 7. Mixing Kool-Aid powder into water (PHYSICAL CHANGE) 8. Mowing the Lawn (PHYSICAL CHANGE) 9. Corroding Metal (CHEMICAL CHANGE) 10. Bleaching your hair (CHEMICAL CHANGE) 11. Fireworks Exploding (CHEMICAL CHANGE) 12. Squeezing Oranges to Make Orange Juice (PHYSICAL CHANGE) 13. Frying an Egg (CHEMICAL CHANGE) 14. Pouring Milk on Your Oatmeal (PHYSICAL CHANGE) 15. Burning Leaves (CHEMICAL CHANGE) 16. Making Salt Water to Gargle With (PHYSICAL CHANGE) 17. Cream Being Whipped (PHYSICAL CHANGE) 18. Burnt Toast (CHEMICAL CHANGE) 19. Freezing Chocolate Covered Bananas (PHYSICAL CHANGE) 20. Melting Ice Cream (PHYSICAL CHANGE)
Is squeezing an orange for juice a physical or chemical change?
Changes | Highlight to reveal Answer |
squeezing oranges to make orange juice | Physical |
frying an egg | Chemical |
pouring milk on your oatmeal | Physical |
burning leaves | Chemical |