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A melting candle demonstrates which reaction?
A melting candle is an example of a physical change, not a chemical reaction. The process involves a solid candle turning into liquid wax due to the application of heat, with no change in the chemical composition of the wax molecules.
What are some examples of a phyiscal reaction?
water turning to ice... water turning to vapor. candle wax turning from solid to liquid and then solid again... crumpling a paper is a physical while burning it is chemical...
Is a substance freezing a chemical reaction?
Freezing is a physical change, not a chemical reaction. When a substance freezes, its molecules slow down and arrange into a solid structure. Chemical reactions involve the rearrangement of atoms to form new substances with different chemical properties.
Dry ice turning into carbon dioxide physical or chemical?
i think it is chemical but it may be physical.
Are Sliced apples turning brown an example of chemical or physical property?
Sliced apples turning brown is an example of a chemical property, specifically oxidation. When the apple cells are exposed to oxygen, enzymes in the apple catalyze a reaction that changes the chemical composition of the apple's surface, causing it to turn brown.
Is turning a penny gold a chemical or physical reaction?
Turning a penny gold is a physical reaction rather than a chemical reaction. This process involves coating the penny with a layer of gold, which changes its appearance but does not alter the chemical composition of the penny itself.
Is turning an egg into a pancake a chemical or a physical reaction?
chemical -you cant turn the pancake back into an egg :)
Is bananas turning black if you leave them in a warm cupboard for a week a chemical reaction and why?
Yes, it is a chemical reaction, because the colour of the banana has changed, which shows that a chemical reaction has taken place. Also, if the banana has gone black and turned bad, you can't change it back to it's original form, which proves that it is a chemical reaction and not a physical reaction. Remember - A chemical reaction has definitely taken place if : It's colour has changed A gas is given off There are energy changes Or, it can't be changed back to what it used to be! :) Hope this helps!!
Is An apple turning brown and food burning on stove is this a physical change?
An apple turning brown is a chemical change because it involves a reaction that changes the chemical composition of the apple. Food burning on the stove is also a chemical change as it involves a combustion reaction that changes the chemical composition of the food.
Is rain turning to snow a chemical reaction?
No, rain turning to snow is a physical process, not a chemical reaction. It occurs when raindrops freeze as they fall through a layer of cold air near the Earth's surface, forming snowflakes.
What is a flower petal turning brown a physical or chemical change?
A flower petal turning brown is a chemical change. This is because the process involves a chemical reaction that alters the composition of the pigment in the petal, causing it to change color.
A melting candle demonstrates which reaction?
A melting candle is an example of a physical change, not a chemical reaction. The process involves a solid candle turning into liquid wax due to the application of heat, with no change in the chemical composition of the wax molecules.
Is the Statue of Liberty a physical change or a chemical change?
No its a chemical change because the acid in the rain reacts with the copper in the statue having a reaction oxidizing it and turning it green.
What are some examples of a phyiscal reaction?
water turning to ice... water turning to vapor. candle wax turning from solid to liquid and then solid again... crumpling a paper is a physical while burning it is chemical...
Dry ice turning into carbon dioxide physical or chemical?
i think it is chemical but it may be physical.
Is a substance freezing a chemical reaction?
Freezing is a physical change, not a chemical reaction. When a substance freezes, its molecules slow down and arrange into a solid structure. Chemical reactions involve the rearrangement of atoms to form new substances with different chemical properties.
Is bannan turning rotten a chemical or physical change?
This is a chemical change.
