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If you watch exploding fireworks from a safe distance hat evidence of a chemical reaction can you observe?
Burning of metals in fireworks is a chemical reaction and is what makes the fireworks glow with different colors.
What else can I help you with?
When firework explodes is physical change or chemical change?
When a firework explodes, it is a chemical change because new substances are formed during the reaction. The compounds inside the firework undergo a rapid chemical reaction when ignited, resulting in the release of light, heat, gas, and sound, which are all evidence of a chemical reaction taking place.
What is evidence that a chemical change has happened?
Evidence of a chemical change includes a change in color, formation of a precipitate, evolution of gas bubbles, or a change in temperature. Additionally, if the substance cannot be easily reversed back to its original form, it is likely a chemical change has occurred.
What is the evidence of chemical change?
Evidence of a chemical change includes the formation of new substances with different properties, such as changes in color, temperature, odor, or formation of a precipitate. Other signs may include the release or absorption of energy, such as light or heat, and irreversibility of the change.
What evidence do you have that a chemical reaction took place?
Evidence of a chemical reaction includes the formation of a new substance with different properties, changes in color, the release of gas or heat, or the formation of a precipitate. Additionally, changes in mass due to the rearrangement of atoms in the reactants can also indicate a chemical reaction has occurred.
What can be evidence of a chemical reaction?
Evidence of a chemical reaction can include formation of a gas, color change, temperature change, formation of a precipitate, or production of light. These observable changes indicate a transformation of substances into new molecules with different properties.
Are Fizzing or foaming evidence that a chemical change may have occurred?
yes it s an evidence that a chemical change has been occurred
How do fireworks show chemical reactions?
The brilliant colors you see when the fireworks explodes comes from a wide variety of metal salts that are packed inside the firework. Now, when most people think of salt they're thinking of the white crystals they sprinkle on their food. That is a salt, but it's not the only salt. That's sodium chloride (NaCl). A salt is any metal atom bound to a non-metal atom. In the case of table salt, sodium is the metal and cholrine is the non-metal. When these salts burn they absorb energy, exciting electrons in the atoms. The excited electrons jump up to a higher energy level, but they are very unstable in that higher energy state. When the electrons relax back to their low energy state they release a photon of light. The color of light changes depending on the metal salt that is used. So, for example, strontium salts burn red, calcium shines orange, green is from barium, white is from magnesium, and copper shines a beautiful blue. Combinations of these salts yields the combinations of their colors (strontium and copper shines purple).
When firework explodes is physical change or chemical change?
When a firework explodes, it is a chemical change because new substances are formed during the reaction. The compounds inside the firework undergo a rapid chemical reaction when ignited, resulting in the release of light, heat, gas, and sound, which are all evidence of a chemical reaction taking place.
What is chemical evidence?
Chemical evidence refers to the use of chemical analysis techniques to identify, characterize, and analyze evidence in criminal investigations. This can involve identifying substances, determining their composition, or linking evidence to a suspect or crime scene based on unique chemical signatures. Chemical evidence is commonly used in forensic investigations to provide crucial information and support legal proceedings.
What observations give evidence that chemical reaction has happen?
No
What evidence of chemical reaction would be seen when burning a match?
Burning is a chemical reaction (oxidation).
What evidence led you to formulate the composition of the solid residue after heating the marble chip?
The evidence is by chemical analysis.
What is the evidence of chemical digestion?
when you intake a chemical through your digestive system, it will later turn up in your bloodstream.
Who has evidence of a chemical change that you can see?
You do, whenever you fry an egg.
What evidence of a chemical reaction is shown in the photo?
lol what photo
What changes gives NO evidence that a chemical reaction has taken place?
Changes such as a change in state (solid to liquid), change in color, change in odor, change in solubility, or change in temperature do not provide direct evidence that a chemical reaction has occurred. These changes can be indicative of a physical change rather than a chemical change. To confirm a chemical reaction, additional evidence such as the formation of new substances, evolution of gas, or consumption of reactants is necessary.
What evidence is there that the distance of the sun is not the cause of the seasons?
It is the tilting of the Earth on its axis that causes the seasons, not the distance from the Sun.
