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Chemical Reactions and Equations
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What is a chemical reaction?
A chemical reaction is a process in which substances interact to form new substances with different properties.
Define reactants and products in chemistry.
Reactants are substances that start a chemical reaction, while products are substances formed as a result of a chemical reaction.
What is the law of conservation of mass?
The law states that mass is neither created nor destroyed in a chemical reaction; it is conserved.
What is a balanced chemical equation?
A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, indicating the conservation of mass.
What is a catalyst?
A catalyst is a substance that speeds up a chemical reaction without being consumed by it.
What is an exothermic reaction?
An exothermic reaction is a chemical reaction that releases energy in the form of heat or light.
What is an endothermic reaction?
An endothermic reaction is a chemical reaction that absorbs energy from its environment.
What is activation energy?
Activation energy is the minimum amount of energy required to start a chemical reaction.
Define synthesis reaction.
A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product.
What is a decomposition reaction?
A decomposition reaction involves breaking down a compound into simpler substances.
Define single displacement reaction.
A single displacement reaction is a chemical reaction where one element is replaced by another in a compound.
What is a double displacement reaction?
A double displacement reaction occurs when parts of two compounds swap places to form two new compounds.
What was observed in a combustion reaction?
A combustion reaction is a high-temperature exothermic reaction between a substance and oxygen, often producing heat and light.
What information does a chemical equation provide?
A chemical equation shows the reactants and products involved in a reaction and their relative amounts.
How can the rate of a reaction be increased?
The rate of a reaction can be increased by factors such as increasing temperature, concentration, surface area, or adding a catalyst.
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