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Unit 1: Chemical Reactions > Chemical Reactions > Flashcards

Chemical Reactions Flashcards

Study Unit 1 Vocabulary

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Organic Chemistry 101 flashcards
1
Q

Matter

A

Anything that takes up space. Matter has mass and volume. States of matter: liquid, solid, gas

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2
Q

Observation

A

Information gathered by noticing what is going on through your senses (what you see, hear, smell, feel)

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3
Q

Property

A

Unique characteristics that help identify a substance and distinguish one substance from another Properties don’t change!

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4
Q

Qualitative

A

Data that is observable by your senses, no measurements, no instrumentation Think: quality!

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5
Q

Quantitative

A

Data that has a numeric value and uses measurements and instrumentation Think: quantity!

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6
Q

Substance

A

Is made up of only ONE type of material (atoms or molecules) all the way through

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7
Q

Mixture

A

Is made up of MORE THAN ONE substance (more than one type of atom or molecule)

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8
Q

Atom

A

The smallest piece of matter you can have that still has all the properties of that substance

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9
Q

Molecule

A

Matter made of 2 or more atoms bonded together

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10
Q

Solubility

A

The degree in which a substance dissolves in another substance (characteristic property)

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11
Q

Solvent

A

The liquid that is able to dissolve a substance (we used water and oil in activity 2.1)

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12
Q

Solute

A

The substance that is able to be dissolved in a liquid (in activity 2.1 we used baking soda, road salt, butter, soap, fat)

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13
Q

Melting Point

A

The temperature needed to make a substance’s particles change from the solid to the liquid phase (characteristic property)

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14
Q

Volume

A

The amount of space that a substance or object occupies

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15
Q

Mass

A

A measure of the amount of matter in an object (measured in grams)

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16
Q

Density

A

The ratio of mass to volume in a substance. A measure of how packed together the particles are (characteristic property)

17
Q

Ratio

A

A proportion or relationship between two numbers

18
Q

Chemical Reaction

A

A change that takes place when one or more substances (called reactants) form one or more new substances (called products) Reactant+reactant→ Products

19
Q

Precipitate

A

A solid formed when two solutions react

20
Q

Reactants

A

“Old stuff” AKA what you start with before the chemical reaction occurs. Reactants are BEFORE the arrow!

21
Q

Products

A

“New stuff” AKA what you end the chemical reaction with. Products are AFTER the arrow!

22
Q

Controlled Experiment

A

A fair test, an experiment where you can trust the data

23
Q

Control Group

A

When running the experiment, this is the group you use for comparison

24
Q

Acid Rain

A

Rain that has been made acidic by certain pollutants in the air

25
Q

Scale Model

A

A copy of an object that is smaller or larger than the actual size of the object

26
Q

Coefficient

A

A whole number placed in front of a chemical formula in an equation. It tells you the number of molecules or atoms of that substance in a chemical reaction

27
Q

Subscript

A

A small number written below the symbol of an element in a chemical formula. It tells you how many atoms of that element are in a molecule: for example, in the formula “”, the “2” is a subscript letting you know that there are two hydrogen atoms in a water molecule.

28
Q

Electrolysis

A

To break apart by electricity

29
Q

Phase change

A

When matter changes from one state (solid, liquid, gas) to another

30
Q

Closed System

A

A system or set-up that does not allow the transfer of matter in or out of the system (ex- alka seltzer in the bottle with the balloon covering the bottle preventing the gas from escaping)

31
Q

Open System

A

A system or set-up that can exchange matter with its surroundings (ex- alka seltzer in the bottle without the balloon covering the bottle which allowed gas to escape)

32
Q

Conservation of matter/mass

A

Matter cannot be created or destroyed. It can only change form.

Unit 1: Chemical Reactions (1 decks)

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