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Is when a match burns heat is evolved an observation law or theory?
Wiki User
∙ 13y ago
Burning (combustion) is a chemical reaction - oxidation; this reaction is exothermic. This is a law.
Wiki User
∙ 7y ago
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When a match burns the wood showed the property of?
chemical property
What gas is present if a lit match flares up brightly?
If the match itself burns brighter, it indicates the presence of more oxygen. It is required for the match to burn at all, and higher levels can make the match burn more rapidly.
Is A match burns leaving only a charred stick of wood physical or chemical change?
Chemical, because it changes into another substance after burning.
Can you get a raw egg sucked into a bottle?
Yes, place a flame (match, candle, etc) inside the bottle, then quickly place an egg on top. As the air in the bottle burns, the pressure will drop and the egg will be sucked into the bottle.
When a safety match ignites and burns is it a physical or chemical change?
I have this same worksheet that has the following questions that I have to answer: Iron rusts. Sodium hydroxide dissolves in water. A safety match ignites and burns. A cube of ice melts to form a puddle of water. Icicles form at the edge of a rof. Water is heated and changed into steam. Milk goes sour. A chocolate bar melts in the sun. Acid on limestone produces carbon dioxide gas. Vinegar and baking soda react. A tea kettle beings to whistle. Wood and leaves rot to form humus. So, I believe that a safety match igniting and burning is a chemical change. I have many Wiki results from that, and some put physical change. I don't think it's a physical change because the fire is on the match, and once it blows out, it creates that black substace which ISN'T fire. It creates a new substance that wasn't there before. Basically, the red part of the match and the fire created that new substance. I hope this helped! Sorry if this is wrong info. *-*
What makes a match burn?
A match burns to produce fire. It burns because of the reaction between the sulfur in the match and the object it is striking.
What theory did Galileo's overturn?
He showed that the geo-centric view of our solar system did not match observation, but that the helio-centric view did. More fundamentally, Galileo Galilei led the way to a view that observation should take precedence over philosophy when determining truth about our world.
What burns when you light a match heads?
Phosphorus and sulfur.
How hot is gun powder?
When it burns, as hot as a burning match.
When a match burns the wood showed the property of?
chemical property
What is the temperature at which match stick burns?
The moment the match stick catches fire when it is given friction from the match box, the temperature would be around 2500oC.
What happens if a scientists observations do not match the scientific theory?
If observations don't match the theory, then either the theory or the experiment is wrong. Maybe a measuring device isn't sensitive or accurate enough. If the experiment is right, but results doesn't match theory, then it's time to come up with a new theoru that matches the experiment's results.
When a match burns chemical energy is changed into thermal and what type of energy?
Light
Which part of the matchsick burns first?
The head of the match where the flammable material is located is usually the first part of the match stick to catch on fire.
Which charcoal lights the fastest?
Match Lite charcoal lights quickly and burns good.
What gas is present if a lit match flares up brightly?
If the match itself burns brighter, it indicates the presence of more oxygen. It is required for the match to burn at all, and higher levels can make the match burn more rapidly.
What is a match pair study?
In situations where there is a logical tie between the data we use a matched pairs experiment • In this experiment we match an observation in one sample with an observation in another • The match is created due to the logical tie they share. • Ex. Studying salaries of marketing and finance majors with similar GPA's - the logical connection is similar GPS's, the data we are pairing is salaries.
