CHEMISTRY EXAM: 1ST SEMESTER - CHAPTERS 1-3 (QUESTIONS AND ANSWERS-LATEST UPDATED )

CHEMISTRY EXAM: 1ST SEMESTER -
CHAPTERS 1-3 (QUESTIONS AND
ANSWERS-LATEST UPDATED 2022-
2023)
chemistry - Answer-study of composition, structure, and properties of matter, the
processes of matter, the process that matter undergoes, and the energy that
accompanies these processes

mass - Answer-measure of amount of matter

matter - Answer-anything that has mass and takes up space

atom - Answer-smallest unit of an element that maintains the chemical identity of that
element

element - Answer-pure substance that cannot be broken down into simpler, stable
substances and is made of one type of atom

extensive properties
ex) volume, amount of energy, mass - Answer-depend on amount of matter present

intensive properties
ex) melting point, boiling point, density, conductivity - Answer-do not depend on amount
of matter present

chemical reaction - Answer-change that alters chemical properties

physical reaction - Answer-change that does not change properties

mixture - Answer-blend or two or more kinds of substance that can be separated

pure substance - Answer-fixed composition

homogeneous - Answer-uniform in composition

heterogeneous - Answer-not uniform throughout

vertical columns - Answer-families or groups

horizontal rows - Answer-periods