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     • One of the fundamental quantities in science is temperature, which is a measure of the average amount of energy of motion, or kinetic energy, a system contains. Temperatures are expressed using scales that use units called degrees.
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     2.4: Temperature - Chemistry LibreTexts

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   How do you define chemistry?

   • The definition of chemistry—the study of the interactions of matter with other matter and with energy—uses some terms that should also be defined. We start the study of chemistry by defining some basic terms. Matter. A book is matter, a computer is matter, food is matter, and dirt in the ground is matter.

   Some Basic Definitions – Introductory Chemistry – 1st Canadian Edition

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   What are the two basic ways to describe matter?

   • There are two basic ways to describe matter: physical properties and chemical properties. Physical properties are characteristics that describe matter as it exists. Some of many physical characteristics of matter are shape, color, size, and temperature. An important physical property is the phase (or state) of matter.

   Some Basic Definitions – Introductory Chemistry – 1st Canadian Edition

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   What is a chemical property of matter?

   • (CC BY-SA 3.0; Spirit469) The solid state depicted is an ice sculpture of an angel, the liquid state is a drop of water, and the gas is clouds made of water vapor. Chemical properties are characteristics of matter that describe how matter changes form in the presence of other matter. Does a sample of matter burn? Burning is a chemical property.

   1.2: Basic Definitions - Chemistry LibreTexts

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   What is a substance in chemistry?

   • Here, we will use the term substance with its strict chemical definition. Chemistry recognizes two different types of substances: elements and compounds. An element is the simplest type of chemical substance; it cannot be broken down into simpler chemical substances by ordinary chemical means.

   Some Basic Definitions – Introductory Chemistry – 1st Canadian Edition

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   What are physical properties of matter?

   • Physical properties are characteristics that describe matter as it exists. Some physical characteristics of matter are shape, color, size, and temperature. An important physical property is the phase (or state) of matter. The three fundamental phases of matter are solid, liquid, and gas (Figure 1.2.1 1.2. 1).

   1.2: Basic Definitions - Chemistry LibreTexts

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   What descriptors can be used to describe matter?

   • There are other descriptors that we can use to describe matter, especially elements. We can usually divide elements into metals and nonmetals, and each set shares certain (but not always all) properties.

   Some Basic Definitions – Introductory Chemistry – 1st Canadian Edition

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3. dictionary.cambridge.org › matter-of-degreeA MATTER OF DEGREE | English meaning - Cambridge Dictionary

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   a situation that involves varying levels of something rather than two completely different things: "That's really bad." "Well, it's all a matter of degree (= there are other things better and other things worse)." The differences between us are just a matter of degree.

4. www.bbc.co.uk › bitesize › articlesWhat are pure substances? - BBC Bitesize

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   In chemistry, a pure substance is a single substance made of only one type of particle.

5. chem.libretexts.org › Bookshelves › Introductory1.2: Basic Definitions - Chemistry ... - Chemistry LibreTexts

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   Jun 23, 2022 · Learn the basic terms used to describe matter. The definition of chemistry—the study of the interactions of matter with other matter and with energy—uses some terms that should also be defined. We start the study of chemistry by defining basic terms.

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     States of Matter - Solids, Liquids, Gases & Plasma - Chemistry

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7. opentextbc.ca › chapter › some-basic-definitionsSome Basic Definitions – Introductory Chemistry – 1st ...

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   Chemistry recognizes three fundamental phases of matter: solid (left), liquid (middle), and gas (right). To understand matter and how it changes, we need to be able to describe matter. There are two basic ways to describe matter: physical properties and chemical properties.

   • Author: David W. Ball, Jessie A. Key

   • Publish Year: 2014

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8. bourne.org.uk › wp-content › uploadsDefinitions and Concepts for AQA Chemistry GCSE D

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   GCSE Chemistry Key Words Halogens: The elements in Group 7 of the periodic table. Ion: An atom or molecule with an electric charge due to the loss or gain of electrons.

9. www.bbc.co.uk › bitesize › guidesMelting and boiling points - Chemical analysis - (CCEA ... - BBC

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   is the temperature at which a solid changes into a liquid. boiling point. is the temperature at which a liquid changes into a gas. Pure substances have specific melting and boiling points....

10. www.bbc.co.uk › bitesize › guidesThe three states of matter - AQA Changes of state - BBC

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    Pages. Solids, liquids and gases. Changes of state. The diagram summarises the common changes of state. Some substances can change directly from solid to gas without becoming a liquid in between....