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What else can I help you with?
Is burning gasoline a physical or chemical change?
Burnig things is always a chemical change.
What things can be done to change how fast a chemical reaction occurs?
You can add a catalyst, or raise the temperature, or change the pressure, these are some of the things done to speed up a chemical reaction.
What is are four things that indicate that a chemical change probably happened?
Four things that indicate a chemical change probably happened include color change, formation of a precipitate, evolution of gas, and change in temperature. These signs suggest that a new substance with different chemical properties has been formed.
What are three things that may happning when is a chemical change?
change in clour state and if bubbles form.
What are sings of a chemical reaction?
Chemical reactions can be recognized by many things, but mainly include a change in color, a variation in temperature, change in shape, or the creation of bubbles.
What things may change the rate of chemical reactions in a cell?
temperature and pH
What are three ways to prevent chemical change?
so no distraction and no wasting of things
What are the changes that may accompany a chemical changes?
- a change in color -a change in odour -bubbling -a change of state (eg. solid to liquid, gas to liquid, etc.) either one or a combination of these things can indicate a chemical change.
Is burning a fire a physical or chemical change?
Burning is a chemical change.
Is things that rot a chemical change or a physical change?
Rotting is a chemical change because it involves the breakdown of organic molecules into simpler substances through chemical reactions. This process cannot be reversed and results in the formation of new compounds.
Is a odor a physical or chemical change?
AnswerNeither. Odor is not a change at all. Odor is airborne molecules that have a particular smell. A change is a process and odor is not a process. The things which cause odors can be either physical or chemical. For instance, the body odor is caused by chemical changes, but if you open jar of a smelly chemical, that is a physical change (some of the molecules of the chemical are evaporating and are thus airborne).When talking about mixing chemicals and substances, a change in odor is a chemical change.(I assume this is what you meant when you asked is odor a chemical or physical change)
You place an ice cube on the sink and it begins to melt . is this a chemical reaction?
This is a physical change. Chemical changes are changes in "what things are made out of".
