General Chemistry ACS Exam Study Guide with Complete Solutions

General Chemistry ACS Exam Study Guide with Complete Solutions chemistry - ️️ Correct-the study of matter, its properties, and the changes that matter undergoes matter - ️️ Correct-physical material of the universe - anything that has mass and occupies space property - ️️ Correct-any characteristic that allows us to recognize a particular type of matter and to distinguish it from other types element - ️️ Correct-combinations of substances in matter atom - ️️ Correct-small building block of matter - composition: kinds of atoms the matter contains - structure: arrangement of atoms molecule - ️️ Correct-2+ atoms joined in specific shape matter is characterized by... - ️️ Correct-1. physical state 2. composition gas - ️️ Correct-- no fixed volume/shape - uniformly fills container - can be compressed or expanded liquid - ️️ Correct-- volume independent of container TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD OWNER: EMILLYCHARLOTTE COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED FIRST PUBLISHED: SEPTEMBER 2024 2/5 - assumes shape of container - not compressible solid - ️️ Correct-- definite shape and volume - not compressible pure substance - ️️ Correct-matter that has distinct properties and a composition that doesn't vary from sample to sample - element: cannot be decomposed into simpler substances - compound: composed of 2+ elements - mixture: combinations of 2+ substances; retains chemical identity electrolysis - ️️ Correct-an electrical current passes through a substance and decomposes it into its component elements mixture - ️️ Correct-composition can vary (components) - heterogeneous mixture: vary in texture/appearance - homogeneous mixture: uniform throughout (aka solution) physical properties - ️️ Correct-observed without changing a substance's identity and composition - color, odor, density, melting point, boiling point, hardness chemical properties - ️️ Correct-the way a substance may react to form other substances - flammability intensive property - ️️ Correct-don't depend on amount of sample being examined TITLE: EMILLYCHARLOTTE 2024/2025 ACADEMIC PERIOD OWNER: EMILLYCHARLOTTE COPYRIGHT STATEMENT: ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED FIRST PUBLISHED: SEPTEMBER 2024 3/5 - temperature, melting point extensive property - ️️ Correct-depend on amount of sample - mass, volume physical change - ️️ Correct-substance changes appearance but not composition - ex: water evaporation chemical change/reaction - ️️ Correct-substance is transformed into a chemically different substance - ex: hydrogen burning in air filtration - ️️ Correct-mixture of solid and liquid is poured