Identify Basic Scientific Measurements Using Laboratory Tools Flashcards

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1
Q

Scientists use what system to measure and record data?

A

Metric System or Systeme Internationale (SI)

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2
Q

This system uses ___ ___ and ___ to increase or decrease size

A

Base Units, Prefixes

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3
Q

The SI Base units for Mass, Length, and Time are:

A

Kilogram, Meter, and Second, Respectively

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4
Q

___ units are also used to measure Volume

A

SI

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5
Q

The Volume of a three-dimensional object has:

A

Length, Width, and Height are of which are measured in length units

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6
Q

The SI base unit for Volume is more familiarly called a:

A

Liter

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7
Q

The SI system also uses ___ to indicate the size of units

A

Prefixes

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8
Q

The prefix “Kilo” means:

A

1,000 so 1 kilometer is 1,000 meters

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9
Q

The prefix “Centi” means:

A

0.01, so 1 centimeter is 0.01 meters

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10
Q

The prefix “Hecta” means:

A

100

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11
Q

The prefix “Deca” means:

A

10

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12
Q

The prefix “Deci” means:

A

0.1

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13
Q

The prefix “Milli” means:

A

0.001

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14
Q

Length is typically measured with a:

A

Ruler or meterstick

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15
Q

Length is:

A

The distance from end to end of an object and is used to describe width, height, and length

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16
Q

Be sure to always start measuring length from the ___ point on your measuring tool

A

0

17
Q

How is Volume measured?

A

In different ways, depending on the state of matter

18
Q

What is Volume?

A

The amount of space an object takes up

19
Q

The Volume of Solids can be calculated by:

The Sides can be measured using:

A

Multiplying the measurements of length, width, and height

Rulers or Metersticks

20
Q

Several types of glassware can be used to measure the ___ of liquids

A

Volume

21
Q

The most accurate tool in measuring Large Volumes is:

A

A Volumetric Flask

22
Q

The most accurate tool in measuring Small Volumes is:

A

A Volumetric Pipette

23
Q

Graduated Cylinders can also be used to measure a range of ___ in the laboratory, but they are less accurate than ___ ___ or ___

A

Volumes, Volumetric Flasks, Pipettes

24
Q

Liquids form a ___ in a measuring tool

A

Meniscus

25
Q

What is a Meniscus?

A

The curve formed at the top of a liquid in response to its container

26
Q

The Meniscus Curve can be:

A

Upward (Concave), Downward (Convex), or Flat, depending on the properties of the liquid and the container

27
Q

When measuring the Volume of a liquid, make sure that the line you are reading is:

A

Even with the center of the Meniscus

28
Q

What are used to measure the Mass of an object?

A

Balances

29
Q

What is Mass?

A

The amount of Matter in an object

30
Q

What are the 2 types of Balances used to measure Mass?

A

The Triple-Beam Balance and Electronic Balance

31
Q

What measurement of Mass is the most common? Why?

A

Electronic Balance because it is easier to use

32
Q

Large items with a large Mass would likely be measured using:

A

Kilograms (kg)

33
Q

It is more efficient to say a person has a mass of 75 ___ than to say a person has a mass of 75,000 ___

A

kg, grams

34
Q

Measuring a few drops of water makes more sense in ___ than in Liters

A

Milliliters

35
Q

For Length, small things like insects and fingernails should be measured in:

A

Millimeters

36
Q

Objects like the width of a piece of paper can be measured in:

A

Centimeters

37
Q

The height of a door or a ceiling should be measured in:

A

Meters

38
Q

The distance between two towns can be measured in:

A

Kilometers