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Fireworks exploding in the sky and giving off light are an example of a(n)?
chemical change
What is the name of chemical that change rock into brownish colour?
The chemical that can change rock into a brownish color is often iron oxide, also known as rust. This process occurs when the iron in the rock reacts with oxygen to form iron oxide, giving the rock a brownish appearance.
In a fireworks show the fireworks explode giving off thr heat and light.Is it a physical or chemical change.?
The explosion of fireworks is a chemical change. This occurs because the combustible materials in the fireworks undergo a chemical reaction when ignited, resulting in the production of new substances, such as gases and light. The release of heat and light is also indicative of this chemical reaction. Physical changes, in contrast, do not involve the formation of new substances.
What is the name giving to the substance that gives the skin its colour?
Melanin is what gives skin its pigment. Some people have more of it than others, and sunlight activates it.
What does it mean to eat out someone's substance?
To "eat out someone's substance" means to consume or deplete someone's resources or wealth, leaving them with little to sustain themselves. It implies taking advantage of someone's generosity or support without giving back in return.
Pouring milk in you r oatmeal - Physical or chemical?
It would be physical change because the substance doesn't change. Signs of chemical changes would be absorbing, liberating (releasing) heat, fizzing, changes of color,or giving off light.
Why is carving wood a physical change?
It is a physical change, because you're giving the wood a new shape.
Is Giving off light a physical change?
Giving off light is considered a chemical change, not a physical change. This is because the emission of light usually involves chemical reactions at the atomic or molecular level that result in the production and release of photons.
What is required to transform a substance from one physical state to another such as solid to liquid to gas?
the addition or giving-up of heat - is required.
What is a chemical change?
A chemical change is a change in which a substance turns into a completely different substance that can't be reversed. A chemical change often happens when a substance burns (not to be confused with evaporation or melting of a substance), changes colors, a substance spoils or rusts, photosynthesis or respiration, and/or a substance tarnishes.Some examples are a bike rusting, burning bread to make toast, fireworks exploding, milk spoiling, a leaf changing color, mixing eggs and flour for a batter, baking a cake, etc.A chemical change will NOT dissolve, go through a state of matter (sublimation, decomposition, melting, freezing, evaporation, and condensation), breaking or tearing of a substance, and/or anything that can be reversed back.A chemical change is one in which one or more new substances are formed. Simple examples include burning and rusting.
Is giving off light a physical or chemical change?
I would think it to be a Physical Change. Not chemical.
Is a sponge being compressed a physical or chemical change?
physical change.
Is grilling a piece of fish chemical or physical?
Grilling a piece of fish involves both chemical and physical changes. The physical change occurs when the fish is heated by the grill, causing it to cook and change texture. The chemical change occurs when the proteins in the fish denature and the Maillard reaction occurs, giving it a different flavor.
Is a Luster of gold jewelry is physical change?
Yes, the luster of gold jewelry is a physical change. It does not alter the chemical composition of the gold, but rather represents the way light interacts with the surface of the gold, giving it its shiny appearance.
When a firecracker explodes giving off light and heat and breaking the wrapper into many pieces is that a physical change chemical change or both?
This is both a physical and chemical change. The explosion involves the release of energy (heat and light), which is a chemical change due to the breaking of chemical bonds. The breaking of the wrapper into many pieces is a physical change as it does not involve any change in the chemical composition of the materials.
Is carving a pumpkin a chemical change or physical?
It is a physical change.
What is the difference between deacribe and explain?
Describe refers to giving a representation in words while to explain refers to giving details, defining the structure and scope.
