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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...
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.
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.
