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State nine observations that suggest that a chemical reaction has occurred?
Wiki User
∙ 13y ago
1. release of energy as heat
2. release of energy as light
3. production of sound
4. reduction or increase of temperature
5. absorption or release of electrical energy
6. formation of gas
7. formation of a precipitate
8. change in color
9. change in odor
Wiki User
∙ 13y ago
Wiki User
∙ 13y ago1) color change
2) temperature change
3) different or new odor
4) Gas bubbles forming (unless water is boiling)
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Is vinegar reacting with baking soda a physical change?
This is a chemical change. This is because it is a simple Acid - Base reaction; they neutralise one another to form a salt and water, along with carbon dioxide because baking soda is a carbonate.
What are the reactants in an acid base neutralization reaction?
An acid-base neutralization is not a specific reaction, but rather a category of chemical reactions. The two reactants are, as the name would suggest, an acid and a base. When they react, they form water, and a salt. Salt, in this sense, is used as a inclusive term for the ionic compound formed. It is not always table salt (NaCl).
What does increased Vmax suggest?
An increase in Vmax suggest an increase in the amount of enzyme in the reaction. Also this increase in Vmax deceases the Km vaule, which means less substrate is needed.
The experiment with potassium and dilute hydrochloric acid should not be done in school laboratories. Suggest why it is dangerous.?
This is a very violent reaction.
What mixes a single dose of the medication with a puff of air and pushes it into the mouth via a chemical propellant?
An inhaler will do what you suggest.
What observations suggest that a chemical reaction has occurred?
One observation that a chemical change has occurred is the formation of a new product. Another observation is the change in identity and composition of a substance.
If new products are made in a chemical reaction what does that suggest about the reaction?
No new products can be made in a chemical reaction. Only the reactants exchange or react with another element.
Suggest 2 observations when Ca reacts with water?
The reaction is:Ca + 2 H2O = Ca(OH)2 + H2- hydrogen gas is released- the reaction occur at room temperature
Experimental observations suggest a gas is being released?
steam
Can you use a permanent marker as makeup?
Wouldn't suggest it. Permanent marker often contains chemical that aren't safe for the skin and may cause a reaction.
Suggest a chemical test(s) to distinguish ethanol and phenol. Include the reagents reaction conditions and observations. And the equation?
Phenol solution, or phenol directly from the manufacturer?If the phenol is in the form it comes in from the factory, no chemical test is necessary. Phenol is a white crystalline solid.If it's dissolved in water, the easiest test is pH. Phenol solution is more acidic than ethanol. So...whatever you use for a pH test will do ya.
Observations that are collected and which support or suggest a conclusion, are known as?
Inductive arguments
Observations that are collected and which support or suggest a conclusion are known as?
Inductive arguments
What are observations that are collected and which support or suggest a conclusion are known as?
Inductive arguments
How do recent observations suggest the universe will end?
Charlie Sheen will have a hand in it
Is vinegar reacting with baking soda a physical change?
This is a chemical change. This is because it is a simple Acid - Base reaction; they neutralise one another to form a salt and water, along with carbon dioxide because baking soda is a carbonate.
Is elephant toothpaste a chemical reaction?
there are different ingredients you need Corbin dioxide 10 times stronger than regular then normal and anything to color it i suggest food coloring and sodium iodide solution 2m and a graduated cylinder
