CHEMICAL REACTIONS QUESTIONS
AND VERIFIED ANSWERS|100%
CORRECT|GRADE A+
Atom - ANSWER Smallest particle of an element
Molecule - ANSWER A group of atoms bonded together
Reactant - ANSWER A chemical substance that is present at the start of a chemical reaction
product - ANSWER A substance produced in a chemical reaction
chemical change - ANSWER A change in matter that produces one or more new substances
physical change - ANSWER A change in a substance that does not involve a change in the identity of the
substance
Properties - ANSWER characteristics used to describe a substance
catalyst - ANSWER substance that speeds up the rate of a chemical reaction
chemical engineer - ANSWER The branch of engineering serving industries that chemically convert basic
raw materials into a variety of products.
materials scientist - ANSWER Someone who studies the characteristics and uses of various materials,
such as metals, ceramics, and plastics.
AND VERIFIED ANSWERS|100%
CORRECT|GRADE A+
Atom - ANSWER Smallest particle of an element
Molecule - ANSWER A group of atoms bonded together
Reactant - ANSWER A chemical substance that is present at the start of a chemical reaction
product - ANSWER A substance produced in a chemical reaction
chemical change - ANSWER A change in matter that produces one or more new substances
physical change - ANSWER A change in a substance that does not involve a change in the identity of the
substance
Properties - ANSWER characteristics used to describe a substance
catalyst - ANSWER substance that speeds up the rate of a chemical reaction
chemical engineer - ANSWER The branch of engineering serving industries that chemically convert basic
raw materials into a variety of products.
materials scientist - ANSWER Someone who studies the characteristics and uses of various materials,
such as metals, ceramics, and plastics.
