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Chemistry

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Alexandra Russel

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Cards in this guide (13)
What is collision theory

The collision theory is when atoms, molecules or ions bash together or collide together.

Collision theory states that the rate of a reaction may be increased by : increasing pressure; raising the amount of heat energy; raising the concentration of the reactant and by introducing a catalyst.

What speeds up a reaction

more catalysts, surface area, concentration, or temperature

It is true that cold usually speeds up reaction rates

No, low temperatures usually slow down reaction rates.

Is it true that a low concentration of a chemical slows reaction rate

true!!! concentration affects reaction rate, the higher the concentration the faster the reaction.

Does every collision between reacting particles leads to products

No, only effective collisions (having specific orientations) leads to products.

Write a c program to find Volume and surface area of cube

Write a c program to compute the surface area and volume of a cube

Is nitrogen oxide an acid

Nitrogen oxide is not considered an acid because it does not dissociate in water.

Is set a action or linking verb

Set is an action verb, as in I set the glasses on the table, or I set the table. It will never be a linking verb.

What are different factors that affect the rates of chemical reactions

Some different factors that affect the rates of chemical reactions include whether or not a catalyst is present, the concentration of the reactants, temperature of the reactants, & pressure in the case of gas phase reactions.

The addition of a increases the rate of reaction by providing an alternative pathway with a lower activation energy

The addition of a catalyst increases the rate of reaction by providing an alternative pathway with a lower activation energy.

What has the author Yin-Nan Lee written

Yin-Nan Lee has written:

'Chemical transformations in acid rain' -- subject(s): Peroxides, Acid rain, Analysis

A catalyzed reaction will have a activation energy and this leads to a in the reaction rate. A) lower decrease B) lower increase C) higher decrease D) higher increase

d

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