The correct answer for this question is activation energy, orientation, and frequency.
The rate of a chemical reaction is directly related to its activation energy because the higher the activation energy the lower is the rate of reaction as we know the reaction only proceed when the reactants have absorbed the enough heat energy to reach the transition state. Thus activation energy determines the rate of reaction.
The orientation of the particles is also very important as we know that the reaction between the two reactants only occur when they collide with proper orientation in time the greater the probability of the collision the greater is the rate of reaction and also the number of collisions also determines the rate of reaction.
The frequency is directly proportional to the rate of chemical reaction as the frequency of the collision increases the rate of the chemical reaction also increases.
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Answer: Option C is not a property of a acid, acids turn blue litmus paper red.
Explanation:
Answer:
Burning, cooking, rusting, and rotting
Students who spend less time studying after school, get lower math grades. Option D.
<h3>What is a research investigation?</h3>
In science, a research investigation is an organized inquiry made into phenomena in order to logically understand them. The investigation follows an established procedure, otherwise known as the scientific method.
The original investigation by the student has to do with factors that affect math grades. Conclusions are usually drawn from the aim and objectives of the research. Thus, the conclusion must relate to the aim of the research in a logical way.
The only option that fits in logically going by the aim of the investigation is that students who spend less time studying after school, get lower math grades.
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Answer:
B.
Explanation:
Si is an element.
A compound is 2 different elements combined. H2O and NaCl fit this requirement, so they are compounds. They cannot be elements because they are not single elements like Si.