0
What heat gas production and color change can all be evidence of chemical change.?
Wiki User
∙ 6y ago
- A gas is evolved from reactants only if a chemical reaction occured.
- The same situation for the color change.
These are very possible signs but they are not absolute; many other factors must be studied.
Wiki User
∙ 6y ago
Add your answer:
Earn +20 pts
What clues can you use to identify a chemical change?
Characteristics of a chemical change can include a temperature change, a color change, the production of bubbles, the production of a precipitate, and a smell.
How can you know this is a chemical reaction?
Evidence of a chemical reaction include the following: formation of a precipitate formation of a gas change in temperature change in color
What evidence is there to show that a chemical reaction has taken place when an egg is cooked?
The change in color indicates that a chemical reaction has taken place.
What should not be used to indicate a chemical reaction?
Change of shape can not be used to indicate a chemical reaction has happened. Examples of evidence of a chemical reaction are changes in odor or color.
What sensory evidence could be used to argue that a chemical transformation of a substance had occurred?
Sensory evidence of chemical reactions may be: - Change of color - Change of odor - Change of aspect - Change of the temperature - A violent reaction with explosion or fire - Bubbling - Emitting a sound - Emitting a light
What results after a chemical change?
A chemical change produces a form of matter that was not there before. Evidence of a chemical change could be changes in temperature, color, smell, and the production of a gas or a precipitate.
How can you be sure that at least one chemical change has occurred?
Evidence that a chemical reaction has taken place usually include appearance of a precipitate, change in color, or production of a gas.
What are the six types of evidence for a chemical change?
Types of evidence for chemical change include: A gas is evolved. A precipitate appears or disappears. Heat may be evolved or absorbed. A color change occurs. A substance disappears.
What does not signal a chemical change color change or production of light and heat or production of gas or change in state?
color change
What clues can you use to identify a chemical change?
Characteristics of a chemical change can include a temperature change, a color change, the production of bubbles, the production of a precipitate, and a smell.
Heat gas production and color change can all be evidence of chemical change.?
- A gas is evolved from reactants only if a chemical reaction occured.- The same situation for the color change.These are very possible signs but they are not absolute; many other factors must be studied.
How can you know this is a chemical reaction?
Evidence of a chemical reaction include the following: formation of a precipitate formation of a gas change in temperature change in color
Do bubbles appear when a chemical change is happening?
Yes. They can. The clues of a chemical reaction are production of a gas, change in temperature, color change, production of a precipitate. If you take either baking soda or baking powder, and you add them to vinegar they both form bubbles in a chemical reaction.
What can be evidence of a chemical reaction?
Generally, you know a chemical reaction has occured if there is a change in temperature, a change in color, a formation of a gas (bubbles), or any kind of flame.
A change in color is evidence of a change?
yes **Why? I need more than just yes. Tell why.** ok ok ok its not always a sign that there is a reaction but in most cases it will be. things that show a reaction are temperature change (usually increase but not always) mass change, state change or physical change. hope this helps
What evidence is there to show that a chemical reaction has taken place when an egg is cooked?
The change in color indicates that a chemical reaction has taken place.
Five evidences of chemical change?
A gas is produced when a chemical change takes place. The temperature changes and a substance disappears. A solid is formed and a color change has occurred. Another chemical change is that a new odor is produced.
