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Chemisty Test > Reactions Test > Flashcards

Reactions Test Flashcards

1
Q

Example of chemical reaction

A

Burn a piece of paper, you can’t get the piece of paper back

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2
Q

What are reactants?

A

The original substances in a reaction

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3
Q

What are products

A

The new substances formed in a reaction

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4
Q

What’s an indication that new substance is produced

A

Color change

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5
Q

What’s a chemical equation?

A

A symbolic description of a chemical reaction

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6
Q

What are chemical formulas

A

Represent reactants and products

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7
Q

What are examples of chemical formulas

A

Polyatomic ions, hydrogen H2, oxygen O2, H2O water

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8
Q

What does the plus sign do in a chemical formula

A

Separates multiple reactants or multiple products

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9
Q

What is the arrow in a chemical formula

A

Separates reactants from products, splits equation in two halves
Yields or produces

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10
Q

H2+O2->H2O is an example of

A

Chemical equation with chemical formulas

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11
Q

What do state of matter symbols do

A

Indicate if a substance exists as a solid, liquid, gas, aqueous, or precipitiate

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12
Q

What are the state of matter symbols (Solid, liquid, gas, aqueous, precipitate)

A

S, l, g, aq, ppt

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13
Q

What does aqueous and precipitate mean

A

Dissolved in water (aqueous)

Solid formed in chemical reaction (precipitate)

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14
Q

What’s the memory trick for diatomic molecules

A

HON-7

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15
Q

What are coefficients

A

Represent the relative amounts of reactants and products

Represent the number of molecules or moles of a substance

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16
Q

What’s the law of conservation of mass

A

Mass is neither created nor destroyed in normal chemical reactions
(Reworded) the total mass of reactants equals the total mass of the products equals the same number of atoms
BALANCED EQUATIONS FOLLOW THIS RULE

17
Q

Know how to…

A

Balance equations

18
Q

In terms of energy content, what are the two kinds of reactions

A

Exothermic, endothermic

19
Q

What’s an exothermic reaction?

A

A reaction in which energy is released to the surroundings , the temperature of surroundings increases (gets hotter), the energy content of products is less than energy content of the reactants

20
Q

Know how to draw

A

Exothermic reaction charts

21
Q

What’s an endothermic reaction?

A

A reaction in which energy is absorbed from the surroundings , the temperature of the surroundings decreases, the energy content of products is greater than the energy content of the reactants

22
Q

Know how to draw…

A

Endothermic reaction charts

23
Q

What’s a synthesis reaction

A

Combine

Combine multiple substances to produce single, more complex, product

24
Q

What’s a decomposition reaction

A

The breakdown of a single compound to produce two or more simpler substances
1 reactant

25
Q

What’s a single displacement reaction

A

Reaction in which a single element reacts with a compound , active elements replace less active elements

26
Q

What’s a double displacement reaction

A

2 elements switch partners
Occurs in ionic compounds
Reactions in which 2 elements in different compounds exchange places

27
Q

Combustion reaction

A

The reaction of a compound with O2 to form oxides and water

28
Q

Oxide

A

Compound containing oxygen

29
Q

Know examples of…

A

Synthesis, decomposition, single displacement, double displacement, and combustion reactions

30
Q

Know how to write and balance

A

All the types of equations studied (synthesis, decomposition, single displacement, double displacement, combustion)

31
Q

What is a chemical reaction?

A

A chemical change in which substances react to form new substances with new properties

32
Q

Know…

A

Polyatomic ions

33
Q

Silver is

A

Ag+1

34
Q

Zinc is…

A

Zn+2

35
Q

Only use activity series with…

A

Single replacement

Chemisty Test (1 decks)

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