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Hesi Exam Prep > Chemistry > Flashcards

Chemistry Flashcards

1
Q

What is the freezing point of water in degrees C, F, K?

A

0 Celsius, 32 Fahrenheit, 273 kelvin

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2
Q

How does a meter compare to a yard?

A

There are 3 ft in a yard and a yard is about 3 inches shorter than a meter.

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3
Q

A kilogram is approximately how many pounds?

A

2.2

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4
Q

A liter is equivalent to how many quarts?

A

About one

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5
Q

What is the breakdown of a gallon?

A

1gallon
4quarts
8pints
16cups

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6
Q

What is the boiling point of water in degrees Celsius, Fahrenheit, and kelvin?

A

212 F
100 C
373K

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7
Q

What does the atomic number represent?

A

Number of protons

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8
Q

What does the atomic mass represent?

A

Number of protons+neutrons

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9
Q

What are alloys?

A

Solid solution of metals to create a new one, such as bronze

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10
Q

What are amalgams?

A

A specific type of alloy in which another metal is dissolved in mercury

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11
Q

What are emulsions?

A

Mixtures of matter that readily separate such as water and oil.

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12
Q

What is Avogadro’s number and what does it represent?

A

One mole of a substance = 6.02 x 10 ^23

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13
Q

What are four ways to increase reaction rate?

A

Increase temperature
Increase surface area of the reactants
Increase concentration of the reactants
Add a catalyst

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14
Q

What are the five main types of chemical reactions?

A 
Synthesis
Decomposition
Combustion
Single replacement
Double replacement
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15
Q

What are the products of a combustion reaction?

A

CO2 and H2O

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16
Q

What is a single replacement reaction?

A

A reaction that consists of a more active metal reacting with an ionic compound containing a less active metal to produce a new compound.

17
Q

What is a double replacement reaction?

A

A reaction involving two ionic compounds. The positive ion from one compound combines with the negative ion of another compound to form entirely new compounds.

18
Q

What are the two main types of chemical bonds?

A

Ionic and covalent

19
Q

What is an ionic bond?

A

A electrostatic bond formed between two ions, usually a metal and nonmetal

20
Q

What is a covalent bond?

A

Sharing of paired electrons that usually occurs between nonmetals. The strongest chemical bond.

21
Q

What are three types of intermolecular forces?

A

Hydrogen bonds, dipole-dipole interactions, dispersion forces.

22
Q

Alpha radiation can be blocked by…

A

A piece of paper

23
Q

Beta radiation can be blocked by…

A

A thin sheet of aluminum, lucite, or plastic

24
Q

Gamma radiation can be blocked by…

A

Lead shielding

25
Q

What is the oxidation number of H?

A

+1

26
Q

What is the oxidation number of Oxygen in a compound?

A

-2

27
Q

What is the chemical formula of glucose?

A

C6h12o6

28
Q

How many monosaccharides must be joined together to create a polysaccharide?

A

More than six

29
Q

The process by which the liver makes glucose from non carbohydrate sources…

A

Gluconeogenesis

Hesi Exam Prep (3 decks)

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