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chemistry 2022 flashcards > the basics > Flashcards

the basics Flashcards

measurement and units included

1
Q

what is matter?

A

anything that occupies space and has mass

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2
Q

What are the 5 different branches of chemistry?

A 
Organic chem
Inorganic chem
Biochem
Physical chem
Nuclear chem
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3
Q

What is an organic compound?

A

A compound that contains carbon and hydrogen bonds

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4
Q

What element do most inorganic compounds not contain?

A

Carbon

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5
Q

What is scientific inquiry?

A

The process of using evidence from observation to create an explanation
(the path to create an explanation)

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6
Q

The scientific method is a form of _____

A

scientific inquiry

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7
Q

Scientific method answers ___ question. It is a ____ process done in the ___ order each time. Results must be ______.

A

one
step by step
communicated

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8
Q

What is step 1/7 of the scientific method?

A

Ask a question/identify a problem

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9
Q

What is step 2/7 of the scientific method?

A

Conduct background research

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10
Q

What is step 3/7 of the scientific method?

A

Create a hypothesis

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11
Q

What is step 4/7 of the scientific method?

A

Test a hypothesis with experiments

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12
Q

What is step 5/7 of the scientific method?

A

Collect data and make observations

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13
Q

What is step 6/7 of the scientific method?

A

Analyze results and draw conclusions

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14
Q

What is step 7/7 of the scientific method?

A

Communicate results

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15
Q

What is pure science?

A

The search for knowledge or facts

uses theories and predictions to understand nature

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16
Q

What is applied science?

A

Using knowledge in a practical way

relating to engineering and tech

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17
Q

What is a scientific theory?

A

a proposed explanation to something based on facts and evidence
tells you why something happens
can be proven false/changed

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18
Q

What is a scientific law?

A

describe what happens in nature based on a repeated observation
tells you exactly what happens

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19
Q

What is an experiment without any changed factors called? What is it used for

A

The control experiment

Used as a standard comparison for the experiment

20
Q

What are factors that don’t change during experiments called?

A

Constants

21
Q

What is a variable in an experiment?

A

A factor that can alter the results of your experiment

22
Q

What does a controlled experiment teach you about a variable?

A

The influence of the variable

23
Q

What is an independent variable?

A

The variable that is changed in an experiment

24
Q

What is a dependent variable?

A

The variable that is influenced by the changing of the independent variable, as well as the result of your experiment

25
Q

What does “accurate” mean?

A

How close a measured value is to a standard or known value (accuracy of an arrow = how close to center of the target)

26
Q

Good data consists of both ____ and _____ observations

A

Qualitative and quantitative

27
Q

What does “precise” mean?

A

How close multiple measured values are to each other (precision of a dart - are they all hitting the same area?)

28
Q

How to calculate percent error?

A

(Value found in experiment - accepted value)/(accepted value) *100

29
Q

SI unit for length?

A

meter

30
Q

SI unit for mass?

A

grams

31
Q

SI unit for weight/force?

A

Newton

32
Q

SI unit for volume?

A

Liter

33
Q

SI unit for temperature?

A

Kelvin

34
Q

SI unit for time?

A

second

35
Q

SI unit for pressure?

A

N/(m^2) or Pascal

36
Q

SI unit for electric current?

A

Ampere

37
Q

SI unit for amount of substrate (Substrate concentration is the amount of substrate present that can be turned into product and is most commonly measured in molarity (moles per liter)) ?

A

Mol

38
Q

What is the mnemonic for the SI prefixes for factors of 10? Name all of them from greatest to least

A

Great Mighty King Henry Died by Drinking Chunky Milk Monday Night
giga, mega, kilo, hecto, deca, deci, centi, milli, micro, nano

39
Q

What is dimensional analysis?

A

A mathematical method used to switch between units using ratios

40
Q

SI unit for density?

A

grams per liter or kg/m^3

41
Q

SI unit for heat?

A

calorie

42
Q

What is the formula to convert Celcius to Kelvin?

A

K=C+273.15

43
Q

What is the formula to convert Farenheit to Celcius?

A

C=(F-32)*5/9 or C=(F-32)/1.8

44
Q

How many kilopascals/pascals is 1 atm (atmosphere)?

A

101.325 kpa or 101325 pa

45
Q

What is STP defined as? What is it’s actual value?

A

The pressure at sea level

1 atmosphere, 101.325 kpa, 101325 pa

chemistry 2022 flashcards (28 decks)

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