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Chem > Unit 2 Vocab > Flashcards

Unit 2 Vocab Flashcards

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1
Q

Matter

A

Any substance with mass and that takes up space

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2
Q

Physical Property

A

A characteristic of a substance that can be observed or measured without changing its identity

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3
Q

Chemical Property

A

A characteristic of a substance that is observed through a chemical reaction

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4
Q

density

A

mass/volume

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5
Q

Physical Change

A

A change in a substance that does NOT change its identity

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6
Q

Chemical Change

A

A change in a substance that changes its identity

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7
Q

Chemical Symbol

A

A notation of 1 or 2 letters that represent an element

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7
Q

Law of conservation of mass

A

Matter cannot be created nor destroyed, but can change forms

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8
Q

Reactants

A

A substance that undergoes change during a reaction

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9
Q

Products

A

A substance formed as a result of a chemical reaction

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10
Q

Chemical Reaction

A

A process that leads to the chemical transformation of one set of chemical substances to another.

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11
Q

Chemical Formula

A

A form of representation for a compound or molecule

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12
Q

Precipitate

A

an insoluble solid that emerges from a liquid solution

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13
Q

Endothermic

A

A reaction where the reactants absorb energy from its surroundings

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14
Q

Exothermic

A

A reaction where energy is released in the form of heat or light

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15
Q

Substance

A

Matter which has specific composition and scientific properties

16
Q

Element

A

A chemical substance that cannot be broken down into other substances

17
Q

Compound

A

Any substance composed of identical molecules consisting of atoms of two or more chemical elements

18
Q

Mixture

A

A material composed of two or more simpler substances

19
Q

Heterogenous

A

A substance that is not uniform throughout

20
Q

Homogenous

A

A substance that is uniform throughout

21
Q

Solution

A

A homogenous mixture of two or more substances

22
Q

Alloy

A

A mixture composed of two or more elements, at least one of which is a metal

23
Q

Solute

A

A substance that dissolves in water

24
Q

Solvent

A

A substance that dissolves other substances to form a solution

25
Q

Distillation

A

The process involving the conversion of a liquid into vapor that is subsequently condensed back to liquid form

26
Q

Chromatography

A

Dissolving a mixture in a fluid solvent

27
Q

Filter

A

Separate solid and fluid matter using a filter as a medium

28
Q

Observation

A

Information gathered by the five senses

29
Q

Inference

A

An idea drawn by ecidence

Chem (3 decks)

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