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HESI A2 2024 > Chemistry > Flashcards

Chemistry Flashcards

1
Q

What is volume typically measured in?

A

mL or cm3

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2
Q

How many L are in 1 mL?

A

1mL=0.001L

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3
Q

How many liters are in 1 gallon?

A

3.79 L

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4
Q

How many pints are in 1 L?

A

2.11 pints

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5
Q

What unit is mass usually measured in?

A

Grams or kilograms

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6
Q

How many lbs are in 1 kg?

A

2.2 lbs

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7
Q

How many ounces are in 1 lb?

A

16 oz

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8
Q

What is length commonly measured in?

A

Meters, centimeters or millimeters

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9
Q

How many cm are in 1 in?

A

2.54 cm

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10
Q

How many cm are in 1 ft?

A

30.5 cm

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11
Q

How many cm are in 1 yd?

A

91.44 cm

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12
Q

How many miles are in 1 km?

A

0.621 miles

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13
Q

What are the 4 fundamental states of matter?

A

Solid
Liquid
Gas
Plasma

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14
Q

What are the characteristics of a solid?

A

Closely packed particles that are held together by strong intermolecular forces to form a definite shape
When heated above melting point it turns into a liquid

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15
Q

What are the characteristics of a liquid?

A

Weaker intermolecular forces than a solid which allows the particles to have more freedom of movement
Turns into a gas when heated above boiling point

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16
Q

What is are the characteristics of a gas?

A

Particles that have enough kinetic energy to overcome the intermolecular forces and can move freely.
Heating a gas to high extremes can produce plasma.

17
Q

What is plasma?

A

A cloud of free electrons and positively charged ions.

18
Q

What are elements made up of?

A

Atoms

19
Q

What are atoms made of?

A

Negativity charged electrons
Positively charged protons
Neutral neutrons

20
Q

What makes up the nucleus of the atom?

A

Protons
Neutrons

21
Q

What are the characteristics of the nucleus of an atom?

A

Very small diameter compared to overall size of the atom
Where most of the atom’s mass is concentrated

22
Q

Where are the electrons located in an atom?

A

Electrons orbit the nucleus in shells

23
Q

What takes up most of the atom’s volume?

A

The free space between the nucleus and electrons

24
Q

What does an element’s nuclear symbol tell you?

A

How many electrons, protons, and neutrons make up the atom

HESI A2 2024 (8 decks)

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