18 Questions
What is the primary requirement for a successful collision in a chemical reaction?
Reactants must collide with sufficient energy and proper orientation
What is the result of ineffective collisions between reactants?
Reactants are not transformed into products
How does an increase in temperature affect the rate of a chemical reaction?
It speeds up the reaction
What is the purpose of food additives designated with E numbers?
To preserve, add flavor, or improve the appearance of food
What is the process by which light energy is converted into chemical energy?
Photosynthesis
What is the term for the small number in a chemical formula that represents the number of atoms of a particular element in a compound?
Subscript
What is the relationship between pressure and volume at constant temperature and amount of gas?
Pressure increases as volume decreases
What is the result of decreasing the volume of a gas at constant temperature?
The pressure increases
What is the category of biomolecules that includes carbohydrates?
None of the above
What is the term for a group of atoms joined together by a chemical bond?
Molecule
What is the term for a small molecule that combines to form a larger molecule?
Monomer
Who is the scientist who investigated the relationship between pressure and volume at constant temperature and amount of gas?
Robert Boyle
What is the effect of increasing the concentration of reactants on the rate of reaction?
It increases the chances of successful collisions between particles.
What is the purpose of a catalyst in a chemical reaction?
To lower the activation energy needed for the reaction.
What is the effect of decreasing the particle size of reactants on the rate of reaction?
It increases the frequency of collisions between particles.
What is the chemical equation for the rusting of iron?
4Fe + 3O2 + 6H2O → 4Fe(OH)3
What is the term for the process by which certain materials deteriorate due to oxidation?
Corrosion
What is the role of enzymes in the human body?
To act as catalysts for different chemical reactions.
Test your knowledge of chemistry fundamentals, including chemical formulas, reaction types, and processes like combustion and photosynthesis. Review the collision theory and rate of reaction concepts.
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