0
If you are trying to decide whether a chemical reaction does or does not take place when two substances are mixed what kind of evidence will you look for?
Wiki User
∙ 15y ago
change of state change of colour fizzing/gas bubbles
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What does the potential energy diagram of a chemical reaction tell you?
Whether the reaction is endothermic or exothermic
How can you determine whether or not a chemical reaction is exothermic?
You can look for the production of energy.
When heat is increased does the chemical reaction speed up?
The effect of heat on a chemical reaction will depend on whether the chemical reaction is exothermic (producing heat), or endothermic (requiring an input of heat). If the reaction is endothermic, then adding heat will increase the speed, but the opposite is true for an exothermic reaction.
How do substances combine to form mixtures?
A chemical substance is a material with a specific chemical compound. A common example of a chemical substance is pure water; it has the same properties and the same ratioof hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Some typical chemical substances are diamond, gold, salt (sodium chloride) and sugar (sucrose). Generally, chemical substances exist as a solid, liquid, or gas, and may change between these phases of matter with changes intemperature or pressure. Chemical reactions convert one chemical substance into another. Forms of energy, such as light and heat, are not considered to be matter, and thus they are not "substances" in this regard.
What are common indicators are used to determine whether cargoes transported are acids or bases?
Indicators can determine a acid and base because of the reaction that occurs between the substances and the indicator by changing color.
two information not provided by a chemical equation?
Symbols and formulae of all the substances involved in a particular reaction. Number of atoms/molecules of the reactants and products formed. Whether a particular reaction is actually feasible or not.
What does the potential energy diagram of a chemical reaction tell you?
Whether the reaction is endothermic or exothermic
How will you judge whether a chemical reaction is exothermic or endothermic in nature?
ty
How can you determine whether or not a chemical reaction is exothermic?
You can look for the production of energy.
Explain how you can tell whether a chemical reaction has taken place?
A chemical change or reaction happens if new substances are formed. there may be a change in temperature so the reaction mixture may heat up or cool down. it also might change colour, give off bubbles of gas or fumes and you also might hear fizzing or a gas might explode.
When heat is increased does the chemical reaction speed up?
The effect of heat on a chemical reaction will depend on whether the chemical reaction is exothermic (producing heat), or endothermic (requiring an input of heat). If the reaction is endothermic, then adding heat will increase the speed, but the opposite is true for an exothermic reaction.
What determines whether energy will be released or absorbed during a chemical reaction?
Bond energy
Which term identifies a type of chemical reaction?
There are more than one type of chemical reaction. -liquid -solid It's when two objects or liquids mix together causing a chemical reaction. By: Sarah P. Stewart
How do substances combine to form mixtures?
A chemical substance is a material with a specific chemical compound. A common example of a chemical substance is pure water; it has the same properties and the same ratioof hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Some typical chemical substances are diamond, gold, salt (sodium chloride) and sugar (sucrose). Generally, chemical substances exist as a solid, liquid, or gas, and may change between these phases of matter with changes intemperature or pressure. Chemical reactions convert one chemical substance into another. Forms of energy, such as light and heat, are not considered to be matter, and thus they are not "substances" in this regard.
How do you determine whether a gas given off during a chemical reaction is oxygen or hydrogen?
Smell
What causes chemical reactions?
A chemical reaction occurs when two compounds collide in a certain orientation and with a certain amount of force. Because particles are constantly in motion (assuming they're not at absolute zero), random collisions do occur, and some of them will be in the proper orientation. So, as long as the activation energy is met, in other words if the solution is hot enough, any possible reaction (depending on reagents present) will occur.
Is it possible to tell whether a chemical change has occurred by watching atoms form new substances?
if the atoms form substances that are chemically different from the reactants, then a "chemical" change has occurred.
