Chem 101 Ivy Tech (Final Review) Exam with Correct Answers

Chem 101 Ivy Tech (Final Review) Exam with Correct Answers International System of Units Correct Answer: A system of measurement based on multiples of ten and on established measures of mass, length, and time. in scientific notation when you move the decimal right is it positive or negative? Correct Answer: negative - in scientific notation when you move the decimal left is it positive or negative? Correct Answer: positive + What is dimensional analysis? Correct Answer: A way to analyze and solve problems using the units, or dimensions, of the measurements What is the formula for density? Correct Answer: D=m/v what is an atom? Correct Answer: the basic unit of a chemical element. What is a molecule? Correct Answer: A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that cab take part in a chemical reaction What is an element? Correct Answer: a Substance that contains only ONE type of atom. What is matter? Correct Answer: Anything that has mass and takes up space What is a mixture? Correct Answer: a substance made by mixing other substances together. What is a solution? Correct Answer: A homogeneous mixture of two or more substances What is a homogeneous mixture? Correct Answer: a mixture that is the same throughout ( has the same proportions of its components throughout any given sample) What is a heterogeneous mixture? Correct Answer: combination of 2 or more pure substances in which the original retain their chemical properties what is a solid Correct Answer: A state of matter that has a definite shape and volume What is a liquid? Correct Answer: A state of matter that has a definite volume but no definite shape. What is a gas? Correct Answer: A state of matter with no definite shape or volume what is a chemical property? Correct Answer: the ability of a substance to undergo a specific chemical change What is a physical property? Correct Answer: a quality or condition of a substance that can be observed or measured without changing the substance's composition What is a chemical change? Correct Answer: A change in matter that produces one or more new substances What is a physical change? Correct Answer: A change in which the form or appearance changes, but no new substances are formed What are the different forms of energy? Correct Answer: kinetic energy and potential energy What is kenetic energy? Correct Answer: energy of motion (movement) What is potential energy? Correct Answer: energy that is stored What is an electron? Correct Answer: A subatomic particle that has a negative charge What is a proton? Correct Answer: positively charged subatomic particle What is an neutron? Correct Answer: Neutrally charged particles that are in the nucleus