Classifying Mixtures Flashcards

Questions and Answers

What is a mixture?

A combination of two or more pure substances that are not chemically combined

What is a homogeneous mixture?

A mixture that has the same appearance and properties throughout

What is a heterogeneous mixture?

A mixture that does not have uniform composition and properties throughout

What is a colloid?

Extremely small particles that are evenly dispersed but not heavy enough to settle out; particles pass through filter paper and scatter light Signup and view all the answers

What is a solution?

A mixture that appears to be a single substance but is made of two or more substances that are evenly distributed throughout Signup and view all the answers

What is a suspension?

The particles are large enough to be seen with a microscope or aided eye; appear 'floating' or 'suspended' in liquid Signup and view all the answers

What is a simple mixture?

A basic combination of two or more pure substances that are not chemically combined Signup and view all the answers

Which of the following are examples of homogeneous mixtures? (Select all that apply)

Solution Signup and view all the answers

Which of the following are examples of heterogeneous mixtures? (Select all that apply)

Suspension Signup and view all the answers

Which of the following are examples of colloids? (Select all that apply)

Jello Signup and view all the answers

Which of the following are examples of solutions? (Select all that apply)

Air Signup and view all the answers

Which of the following are examples of compounds? (Select all that apply)

Salt Signup and view all the answers

What is a compound?

Pure substances composed of two or more elements that are chemically combined Signup and view all the answers

What is an element?

A substance that cannot be broken down by chemical or physical means Signup and view all the answers

Study Notes

Mixtures Overview

Mixtures consist of two or more pure substances that are not chemically combined.

Homogeneous Mixture

Features uniform appearance and properties throughout.
Examples include colloids and solutions.

Heterogeneous Mixture

Lacks uniform composition and properties throughout.
Examples include suspensions and simple mixtures.

Colloid

Contains extremely small particles that remain evenly dispersed without settling.
Particles can pass through filter paper and scatter light, creating a Tyndall effect.

Solution

Appears as a single substance with evenly distributed components.
Composed of two or more substances that are blended at the molecular level.

Suspension

Composed of larger particles that can be seen with the naked eye or a microscope.
Particles appear to float or be suspended in a liquid medium.

Simple Mixture

A basic and straightforward combination of two or more pure substances.

Examples of Mixtures

Homogeneous Mixtures: Include colloids and solutions; share consistent properties.
Heterogeneous Mixtures: Include suspensions and simple mixtures; varied composition.
Colloids: Common examples are milk, mayonnaise, whipped cream, jello, fog, and butter.
Solutions: Include air, soda, humidity, dental fillings, antifreeze, ocean water, and brass.
Suspensions: Represented by snow globes, muddy water, and Italian dressing.
Simple Mixtures: Examples encompass rocks, soil, granola, salad, nut mixes, and confetti.

Compounds and Elements

Compounds are pure substances formed from two or more elements chemically combined.
Elements cannot be broken down into simpler substances by chemical or physical means.
Examples of compounds include salt (NaCl), water (H₂O), and sugar (C₁₂H₂₂O₁₁).
Examples of elements include sodium (Na), iron (Fe), copper (Cu), oxygen (O), and gold (Au).

Description

Test your understanding of different types of mixtures with these flashcards. Learn about homogeneous and heterogeneous mixtures, as well as colloids, and their properties. Perfect for students studying chemistry or related subjects.