Classification of Matter

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Questions and Answers

Which of the following best describes a solution?

A homogeneous mixture with only one visible phase. (correct)

A mixture with visible layers.

A mixture containing solid particles that settle over time.

A cloudy mixture with suspended particles.

A mechanical mixture consists of two or more types of particles that are uniformly distributed.

False

What are the two types of pure substances?

Elements and compounds.

A __________ is a type of mixture where particles are evenly mixed but not dissolved.

suspension Signup and view all the answers

Match the following types of matter with their descriptions:

Element = A pure substance made of one kind of atom Compound = A pure substance formed from two or more different elements Mechanical mixture = A heterogeneous mixture with visible layers Solution = A homogeneous mixture that appears as one phase Signup and view all the answers

Which of the following is an example of a compound?

Water (H2O) Signup and view all the answers

All mixtures can be classified as either mechanical mixtures or solutions.

False Signup and view all the answers

Give one example of a mechanical mixture.

Salad, nut mix, or spice mix. Signup and view all the answers

In a __________, you can often observe the individual components because it is heterogeneous.

mechanical mixture Signup and view all the answers

Which property is NOT associated with pure substances?

Varied particle types Signup and view all the answers

Which characteristic defines a mechanical mixture?

It consists of two or more different types of particles. Signup and view all the answers

A solution is considered a heterogeneous mixture.

False Signup and view all the answers

What is the primary difference between elements and compounds?

Elements consist of one type of atom, while compounds are made of two or more different elements combined. Signup and view all the answers

Examples of mechanical mixtures include __________ and nut mixes.

salads Signup and view all the answers

Which of the following is an example of a suspension?

Tomato juice Signup and view all the answers

All pure substances can be separated into simpler substances.

False Signup and view all the answers

Describe what a solution is in terms of particle visibility.

A solution is a mixture where only one layer or phase is visible, indicating it is homogeneous. Signup and view all the answers

Sodium chloride (NaCl) is an example of a __________.

compound Signup and view all the answers

Which of the following properties is unique to pure substances?

They have a specific melting point. Signup and view all the answers

Study Notes

Classification of Matter

Matter is anything with mass and volume
Matter is classified by its physical properties, such as state, color, size, shape, and smell
Physical properties are determined by particle arrangement
Matter is classified into mixtures and pure substances

Mixtures

Mixtures have two or more different types of particles
Three kinds of mixtures: mechanical mixtures, solutions, and suspensions
Mechanical mixtures are heterogeneous, noticeable layers/phases, with examples including salads, nut mixes, and spice mixes
Solutions are homogeneous, one layer/phase, often translucent. Examples include sugar dissolved in tea or coffee
Suspensions are heterogeneous, cloudy or opaque, with particles of one substance held within another. Examples include tomato juice

Pure Substances

Pure substances have only one type of particle
Pure substances have unique properties, such as melting point, boiling point, color, and hardness
Two kinds of pure substances: elements and compounds

Elements

Elements are the most pure kind of substance
Elements cannot be broken down into anything simpler
Elements are found on the periodic table
Elements are made up of one kind of atom. Examples: oxygen (O2), iron (Fe), copper (Cu), and carbon (C)

Compounds

Compounds are made by combining two or more different elements together
Compounds are one kind of molecule
Molecules are made of atoms/elements
Example: sodium chloride (NaCl, or salt) is made up of sodium and chlorine atoms.
Water (H₂O) is a compound made of hydrogen and oxygen atoms.

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Description

This quiz covers the classification of matter based on physical properties and its types. Learn about mixtures, pure substances, and their characteristics in this informative quiz. Understand the differences between mechanical mixtures, solutions, and suspensions.