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Which scientist showed that the total mass of the substances in a chemical reaction is always the same before and after the chemical reaction?
Wiki User
∙ 12y ago
Antoine Lavoisier
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoLavoisier
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Define products in a chemical reaction?
They are substances formed by a chemical reaction. All atoms that are present in the reactants are present in the product. Products are always on the RIGHT of the formula.Exothermic reaction:Ex: Reactants--->Products + EnergyEndothermic reaction:Ex: Reactants+energy--> Products...Reactants...............Products{6CO2+6H2O}--->{C2H12O6+6O2 }
What happens to a substance during a chemical change or chemical reaction?
substances can change to a solid, gas or liquid. solid - precipitate gas - fumes liquid - color change Either way, since its a chemical reaction, there always will be a change in the chemical composistion of a substance.
When substances form mixtures the substances always change their physical state?
The statement in the question is false. It is very common for two liquids to form a mixture that is also liquid, and, unless a chemical reaction occurs, a mixture of two gases always is also a gas.
What substance is always made in a chemical reaction?
Reactants
What happens to the bonds of the products during a chemical reaction?
Chemical reactions always involve changes in the chemical bonds that join atoms in compounds. At least one chemical bond is broken or formed during a chemical reaction.
What are the products in a chemical reaction-?
Answer this question… The starting substances
What is the name given to the substances at the start of a reaction?
The chemicals at the start of a reaction are always called the reactants.The chemicals at the end of a reaction are always called the products.
Define products in a chemical reaction?
They are substances formed by a chemical reaction. All atoms that are present in the reactants are present in the product. Products are always on the RIGHT of the formula.Exothermic reaction:Ex: Reactants--->Products + EnergyEndothermic reaction:Ex: Reactants+energy--> Products...Reactants...............Products{6CO2+6H2O}--->{C2H12O6+6O2 }
What are reactants and products?
Reactants (or 'substrates') are two or more elements/ compounds that chemically interact to form a new substance. They are the starting materials for a reaction and are always found at the left side of a chemical equations.A reactant is one of the inputs in a reaction, that get changedThe word reactant is used in chemistry. A substance that has a reaction and undergoes a change is considered reactant.
Is boiling always a sign of a chemical reaction?
No, boiling is not always a sign of a chemical reaction.
What happens to a substance during a chemical change or chemical reaction?
substances can change to a solid, gas or liquid. solid - precipitate gas - fumes liquid - color change Either way, since its a chemical reaction, there always will be a change in the chemical composistion of a substance.
What is the difference between a reactant and a product in a chemical reaction?
Substances initially present in a chemical reaction that are consumed during the reaction or a substance that participates in a chemical reaction, esp a substance that is present at the start of the reaction while the end product of some chemical reactions yield products.
When a chemical property is observed the identity of the substances?
Always :)
When substances form mixtures the substances always change their physical state?
The statement in the question is false. It is very common for two liquids to form a mixture that is also liquid, and, unless a chemical reaction occurs, a mixture of two gases always is also a gas.
What involve a chemical chemical change?
Chemical reactions involve a change in the chemical composition of the reacting substances.
Is burning of fuel in a cutting torch a chemical reaction?
Yes, burning of fuel is always a chemical reaction.
What is always conserved in a chemical reaction?
mass
