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Science > Chemical Interactions > Flashcards

Chemical Interactions Flashcards

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1
Q

Matter

A

anything that takes up space

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2
Q

Physical Properties
Physical Changes

A

use your senses
smash, tear, bend, crush

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3
Q

Chemical Properties
Chemical Changes

A

change the substance chemically
rusting, burning, tarnishing, oxidation

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4
Q

Evidence of chemical reaction 6

A
  1. color changing
  2. producing gas
  3. endothermic
  4. exothermic
  5. precipitate
  6. cold
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5
Q

Precipitate

A

solid mixture left over in a reaction

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6
Q

2 types of chemical reactions & define

A

endothermic rx –energy taken in
exothermic rx – energy given off

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7
Q

Chemical equation parts

A

use chemical formulas & symbols to explain a chemical reaction product, reactants, yield (), +

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8
Q

Conservation of mass

A

energy can not be created nor destroyed - just change forms

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9
Q

2 types of systems & define

A

open system (substances can escape a reaction)
closed system (substances can not escape)

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10
Q

4 types of chemical equations

A
  1. synthesis
  2. decomposition
  3. single displacement
  4. double displacement
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11
Q

Synthesis

A

putting reactants together - ex. reactant + reactant –> product

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12
Q

Decompostion

A

Breaking down product –> reactant + reactant

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13
Q

Single displacement

A

AC + B –> A + CB

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14
Q

Double displacement

A

AC + BD –> AD + BC

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15
Q

What does every reaction need to get started

A

activation energy

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16
Q

Exothermic energy

Most energy?

A

reaction giving off - reactants (ex. fire)
beginning of it

17
Q

Endothermic energy

Most energy?

A

reaction that takes in energy -product (ex. ice)
in hand

18
Q

4 ways to change the rate of a reaction

A
  1. increase surface area
  2. increase concentration
  3. temperature change
  4. catalyst / inhibitors
19
Q

Catalyst

A

a chemical that speeds up a chemical reaction

20
Q

Inhibitor

A

a chemical that slows down a chemical reaction

21
Q

Combustion

A

rapid reaction between oxygen & fuel

22
Q

Fire triangle

A

Fuel
Oxygen
Heat

23
Q
A

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