Grade 7 Chapter 8 Test Study Guide

Chapter 8 Key Terms

□   alloy

□   concentrated solution

□   concentration

□   dilute

□   distillation

□   evaporation

□   filtration

□   insoluble

□   magnetic

□   paper chromatography

□   saturated solution

□   saturation point

□   sifting

□   solubility

□   solute

□   solvent

□   sorting

□   supersaturated

□   unsaturated

Review the key concepts and chapter summary below

Key Concepts

Chapter Summary

• Solutions consist of solutes and solvents. • Solutions can be dilute or concentrated, and saturated, unsaturated, or supersaturated. • The concentration of a solution is the amount of solute dissolved in a specific amount of solvent.

• The concentration of a solution can be described in qualitative and quantitative terms. (8.1) • Solutes and solvents can be identified in various kinds of solutions. (8.1) • Solubility is affected by temperature, type of solute or solvent, particle size, and stirring. (8.2) • Solutions and mechanical mixtures are separated in different ways. (8.3) • Water is sometimes known as the universal solvent. (8.1) • Gases dissolve more in colder water than in warmer water • Water is sometimes known as the universal solvent. (8.1) • Review how to calculate the concentration of a solution