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The answer choices weren't provided. There must be a change in chemical properties for a change to be considered a chemical reaction.
What else can I help you with?
What are 3 conditions that necessary for a reaction to occur?
There are many factors that affect the occurance of a chemical reaction. If the reaction you are using has any buffer or catalyst than you should be selective in that keeping in mind your reactants and product. The temperature required for any particular reaction to occur should also be kept in mind.
What must energy do to break achemical bonds for a reaction to occur?
Energy must be absorbed to break chemical bonds for a reaction to occur. This energy input is needed to overcome the bond's stability and allow new bonds to form in the reaction.
What gas must be present for a combustion reaction to occur?
Oxygen gas must be present for a combustion reaction to occur.
Molecules involved in a chemical reaction must collide to react What is this concept called?
This concept is called collision theory. It states that in order for a chemical reaction to occur, reactant molecules must collide with enough energy and proper orientation.
What must be produced for a double displacement reaction to occur?
A precipitate, water, or a gas must be produced for a double displacement reaction to occur.
In a chemical reaction the reaction must do what?
The reaction must change the chemical nature of reactants.
What are 3 conditions that necessary for a reaction to occur?
There are many factors that affect the occurance of a chemical reaction. If the reaction you are using has any buffer or catalyst than you should be selective in that keeping in mind your reactants and product. The temperature required for any particular reaction to occur should also be kept in mind.
Can a chemical reaction occur without any new substanced?
No, in order for a chemical reaction to take place, a new chemical substance must be formed.
What kind of change must occur for an element to be removed from its compound?
a chemical change
What must energy do to break achemical bonds for a reaction to occur?
Energy must be absorbed to break chemical bonds for a reaction to occur. This energy input is needed to overcome the bond's stability and allow new bonds to form in the reaction.
A catalyst increases the rate of a chemical reaction by changing which of the following conditions?
A catalyst can speed up the rate of a given chemical reaction by lowering the activation energy required for the reaction to occur. However, the catalyst does not change the total free energy from reactants to products.
Is burn a physical change?
It's an exothermic reaction (oppose to an endothermic reaction). It's combustible reaction, (this is an example of chemical reaction) where a substance must combine with oxygen to produce, heat and light; or Burn.
What is the only way a chemical change can occur?
A new compound must be obtained.
How might a thermometer help you decide if there was any chemical change on mixing iron and charcoal?
For a chemical change to occur, there must be a chemical reaction. A chemical reaction would be either endothermic (uses energy, mostly heat), or exothermic (produces energy, again mostly heat). Any change in temperature of the reactants, as measured by a thermometer, will tell you not only ifa chemical reaction occurred, but also which kind of chemical reaction. No temperature change usually indicates that no reaction has occurred, a decrease in temperature would indicate an endothermic reaction, while an increase in temperature would indicate an exothermic reaction.
Is hardness a change in chemical property?
There are many different possible property changes in a chemical change. You must post the specific reaction for anyone to tell you exactly.
What 3 things need to happen in order for a chemical reaction to occur?
This isn't answerable without knowing what the chemical reaction is. Some reactions are very easy to initiate - alkali metals and halogens will react with little to no prodding. Others require intermediate reactions.
What gas must be present for a combustion reaction to occur?
Oxygen gas must be present for a combustion reaction to occur.
