Unit-3: Basic concepts of Chemistry Flashcards
Q1: What is Chemistry?
A: The branch of science that studies matter, its properties, composition, structure, and the changes it undergoes during chemical reactions.
Q2: What is matter?
A: Anything that occupies space and has mass.
Q3: What does Chemistry study?
A: Atoms, molecules, compounds, ions, their composition, characteristics, structures, and interactions.
Q4: What type of energies does Chemistry study?
A: Energies released or absorbed during chemical reactions.
Q5: Name an example of a daily chemical reaction.
A: Photosynthesis: Plants use water, carbon dioxide, and sunlight to produce food.
Q6: What does Organic Chemistry study?
A: Carbon-containing compounds and their interactions.
Q7: What is Inorganic Chemistry focused on?
A: Non-carbon compounds and their properties.
Q8: What is Analytical Chemistry?
A: The study of identifying and analyzing the composition of substances.
Q9: What does Physical Chemistry examine?
A: The behavior of atoms, molecules, and the fundamental laws of Chemistry.
Q10: What is Biochemistry?
A: The study of chemical processes in biological systems.
Q11: What does Environmental Chemistry study?
A: Chemicals and their impact on the environment.
Q12: What is Nuclear Chemistry?
A: The study of radioactive elements and their properties.
Q13: What does Polymer Chemistry focus on?
A: The study of macromolecules and polymers.
Q14: What is Biophysical Chemistry?
A: The study of biological macromolecules and their properties.
Q15: How does Chemistry contribute to skincare?
A: Sunscreens use organic and inorganic compounds to protect against UV radiation.
Q16: How is Chemistry involved in cooking?
A: Chemical reactions like caramelization and Maillard reactions enhance flavors.
Q17: What process is used to make soaps?
A: Saponification.
Q18: How does Chemistry contribute to medicine?
A: By developing drugs and understanding their interactions with biological systems.
Q19: What is the role of Chemistry in detergents?
A: Detergents are emulsions created through chemical processes.
Q20: How does Chemistry help in food preservation?
A: By creating preservatives and enhancing shelf life.
Q26: What are the primary types of chemical bonds?
A: Covalent bonds, Ionic bonds, and Metallic bonds.
Q27: What is a covalent bond?
A: A bond where atoms share electrons.
Q28: What is an ionic bond?
A: A bond formed by the transfer of electrons between atoms.
Q29: What is a metallic bond?
A: A bond involving delocalized electrons in metals.
Q30: Name two secondary chemical bonds.
A: Hydrogen bonds and Van der Waals forces.
Q32: What role do enzymes play in food chemistry?
A: Enzymes are used in food processing to enhance efficiency.
Q33: How has Chemistry influenced sugar substitutes?
A: It has developed sugar-free alternatives for health benefits.
Q34: Name a chemical contribution to the food packaging industry.
A: Development of materials to preserve food quality.
Q35: How does Chemistry help with food flavoring?
A: By synthesizing flavors to make them more cost-effective.
Q36: What is the role of Chemistry in vitamin supplements?
A: It ensures the creation of essential nutrients for dietary needs.
