Chapter 6 and 7-Chemistry Flashcards Preview

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Flashcards in Chapter 6 and 7-Chemistry Deck (39):
1

Solid

State of matter with a fixed shape and volume

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Liquid

State of matter with a fixed volume, but no shape

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Gas

State of matter with no fixed shape or volume

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Properties

Characteristics or features of an object or substance

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Diffusion

The spreading of one substance through another due to the movement of their particles

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Mass

The quantity of matter in an object

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Volume

The amount of space taken up by an object or substance

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Fluid

A substance that flows and has no fixed shape

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Melting point

When a solid turns into a liquid

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Boiling point

When a liquid changes to a gas

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Sublimation

The change from a solid to a gas

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Precipitation

Falling water in solid or liquid form.

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Meteorologists

Scientists who predict weather

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Particle model

Particles that make up all matter and how they behave

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Expands

Increase in size due to the movement of particles in a substance

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Contracts

Shorten or become smaller in size

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Alchemists

Olden day chemists

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Investigations

Activity aimed at finding information

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Observations

Information obtained by the use of our senses or measuring instruments

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Scientists

People working in field of science

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Elements

Pure substance only made up of one type of atom

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Atoms

A very small particle that makes up all things.

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Atomic number

Number of protons in the nucleus of an atom.

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Chemical symbol

The standard way that scientists write the names of the elements. It is done by using a capital letter and a lower case letter for example, Carbon is C and Copper is Cu

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Compounds

Substance made up of two or more different types of atoms that been bonded

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Bonded

Force that holds particles of matter together

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Mixtures

A combination of substances in which each keeps its own properties

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Hydrogen

Thee element with the smallest atom

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Metals

Elements that conduct heat and electricity

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Non-metals

Elements that do not conduct electricity or heat

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Metalloids

Elements that have the appearance of metals but not all the other properties of metals

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Periodic table

A table listing all known elements

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Group

In the periodic table of elements, a single vertical column of elements with a similar nature

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Inert

Not reactive

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Noble gas

Elements in the last column of the periodic table

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Molecules

Two or more atoms bonded forming a small particle.

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Polymer

Substance made by joining smaller identical units

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Plastics

Synthetic substance capable of being Moulded

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Combustible

Easily lightened