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What describes a catalyst?
A character who makes events happen.
What is a chemical substance that helps control reactions?
A catalyst is generic term used to influence rates of reaction. The catalyst lowers the activation energy required to start the reaction. In biology, catalysts are called enzymes.
What is a chemically inactive substance used for comparison with active drugs in an experiment?
A chemically inactive substance used for comparison with active drugs in an experiment is called a placebo. Placebos do not contain any active ingredients but are given to participants as a control to measure the effects of the active drug. This helps researchers determine if the observed effects are due to the drug being tested or are the result of psychological factors.
Which substance can affect the rate of a chemical reaction without itself being changed or used up during the reaction?
The answer you're looking for is a "catalyst". Unless you are in Chemistry 12, you don't need to know that reaction equations with more than 3 molecules on the reactants' side consist of several steps, in which intermediates (things that are produced/used and involved in the reaction, but are reused or produced before the end) like catalysts come into the reaction. Catalysts influence reaction rate, but do not show up in the final equation of an overall reaction. They are sometimes listed over the "arrow" in the equation. Inhibitors slow reactions, and are the opposite of catalysts in that way. Source - Chem 12 Student under Jim Nattrass
Why a catalyst is not considered a reactant or product in a chemical reaction?
If a substance is a reactant or product of a chemical reaction then, by definition, it cannot be a catalyst.
What is the rate of disappearance equation used to determine the speed at which a substance is consumed or transformed in a chemical reaction?
The rate of disappearance equation is used to calculate how quickly a substance is used up or changed in a chemical reaction. It helps determine the speed at which the reaction is happening.
What is a substance which helps make a chemical change happen but is not changed itself in the process is called?
Catalyst: a substance which speeds up a chemical change or enables the change to take place at a lower tempature, and is not changed or used up in the reaction.
What substance helps speed up a reaction in turtles body?
enzymes
What happens after dipping a substance into a pH solution?
When a substance is dipped into a pH solution, it will either change color due to a chemical reaction with the solution, or it may not show any visible change if the substance is neutral. This process helps determine the acidity or basicity of the substance based on the pH solution's color change.
What is a substance that helps chemical reactions?
A substance that helps chemical reactions is called a catalyst. It speeds up the rate of a reaction by providing an alternative pathway with lower activation energy. Catalysts are not consumed in the reaction and can be used repeatedly.
A substance which helps make a chemical change happen but is not changed itself in the process is called an?
The answer is catalyst
What is a pure substances and how does it relate to elaments and compounds?
a pure substance is something that hasn't been chemically combined with another substance and this relates to elements and compounds because on the periodic table the compounds are chemically mixed. hope this helps you by the way you didn't wwrite elements the correct way, you spelt it elaments!
A substance which helps a reaction to take place but that does not take an active part is a?
A substance which helps with chemical reactions, by making them possible at all, or reducing the effort required, is a catalyst.
What is another name for a pure substance?
The terms element and compound are used to identify pure substances.
What describes a catalyst?
A character who makes events happen.
What is the concept of equivalence in chemistry and how is it used to determine the amount of a substance in a chemical reaction?
In chemistry, equivalence refers to the equal amount of reacting substances involved in a chemical reaction. It is used to determine the amount of a substance by comparing the number of equivalents of different substances involved in the reaction. This helps in calculating the stoichiometry and quantities of reactants and products in a chemical reaction.
What is the number you place to the left of the formula for a substance taking part in a reaction?
The stoichiometric coefficient is the number placed to the left of the formula for a substance taking part in a reaction to represent the amount of moles of that substance involved in the reaction. It helps balance the chemical equation by ensuring that the number of atoms of each element is the same on both sides of the equation.
