0
No, a chemical change does not always produce heat. Some chemical changes absorb heat, leading to a decrease in temperature. These changes are known as endothermic reactions.
no they can produce a new smell, substance, or/and the substance can become cloudy
Add your answer:
Earn +20 pts
Is combustion a physical change?
Combustion is a chemical change, not a physical change. It involves a chemical reaction where a substance reacts with oxygen to produce heat, light, and new chemical compounds.
Is sugar being heated to produce steam and a black solid a chemical change?
Yes, sugar being heated to produce steam and a black solid is a chemical change. The heat breaks down the sugar molecules, leading to the formation of new substances (steam and the black solid), which are chemically different from the original sugar molecules.
What type of change is seen in Bursting of crackers?
The bursting of crackers involves a chemical change, where the chemical composition of the materials in the crackers is altered to produce the sound, light, and heat effects. This process is irreversible.
Is burning a match physical or chemical matter?
Burning a match involves a chemical reaction where the match tip reacts with oxygen in the air to produce heat and light. This process involves both physical and chemical changes, as the match undergoes combustion to produce new substances such as ash and smoke.
What type of change is combustion?
Combustion is a chemical change because it involves the rearrangement of atoms and the formation of new substances. It is a exothermic reaction where a fuel reacts with oxygen to produce heat, light, and new chemical compounds.
Is hydrchloric acid reacting with sodium hydroxide to produce a salt water and heat a physical change or a chemical change?
It is a chemical reaction - a chemical change.
Is burning coal for heat a chemical change?
Yes, burning coal for heat is a chemical change. It involves the chemical reaction of the carbon in coal with oxygen in the air to produce heat energy, carbon dioxide, and other byproducts.
Is combustion a physical change?
Combustion is a chemical change, not a physical change. It involves a chemical reaction where a substance reacts with oxygen to produce heat, light, and new chemical compounds.
Is the burning of methane gas in a cooker a physical or chemical change?
The burning of methane gas in a cooker is a chemical change. In this reaction, methane reacts with oxygen to produce carbon dioxide, water, and heat energy. This results in a new substance being formed with different chemical properties than the original methane gas.
In a firework show the fireworks explode giving off heat and light is this a chemical change why?
It is a chemical change because the chemical composition is changed during this reaction.
Can a chemical change produce heat?
yes it can they can nharm you a lot and make you hav different sort of allergies
Is burning of coal a physical change?
Burning of coal is a chemical change, not a physical change. During the burning process, the chemical composition of coal changes as it reacts with oxygen to produce heat, light, and ash.
Is Hydrochloric acid reaction with sodium hydroxide to produce salt water and heat a chemical change?
Yes, the reaction of hydrochloric acid with sodium hydroxide to produce salt (sodium chloride) and water is a chemical change. This is because a new substance (salt) is formed with different chemical properties than the original substances. Additionally, heat may be produced during the reaction, indicating a chemical change has occurred.
Is burning coal in a furnace a chemical change?
Yes, burning coal in a furnace is a chemical change. During combustion, the coal undergoes a chemical reaction with oxygen to produce heat, carbon dioxide, and other byproducts, resulting in a change in the chemical composition of the coal.
Is hydrochloric acid reacts with potassium hydroxide to produce a saltwater and heat a physical or chemical change?
The reaction of hydrochloric acid with potassium hydroxide is a chemical change because new substances (salt and water) are formed that have different chemical properties than the original reactants. The release of heat is an indicator of a chemical reaction taking place.
Ignition of matches a chemical or physical change?
The ignition of matches is a chemical change because it involves a chemical reaction between the materials in the match head and the sulfur on the strike strip to produce heat and light. This reaction cannot be reversed to return the match to its original state.
Is burning a candle happen slowly and a chemical change?
Burning a candle is a chemical change that happens relatively quickly. The heat from the flame melts the wax, which is then vaporized and reacts with oxygen in the air to produce light, heat, carbon dioxide, and water vapor. This process is a combustion reaction, which is a type of chemical change.
