Measurements

Question 1

tool of science

Answer 1

Math

Question 2

We measure mass quantity of
matter

Answer 2

Measurement

Question 3

invariable and independent

Answer 3

Mass (kg,g)

Question 4

• Varies relation to distance
• Depend on the gravitational force
• The lower the gravitational force, the lower the weight and vice versa

Answer 4

Weight

Question 5

• Space occupied by substance or object
• Bigger space = bigger volume

Answer 5

Volume (liter, mL)

Question 6

• Distance covered of the certain object
• How long or short the object is

Answer 6

Length

Question 7

Volume, mass degrees Fahrenheit, Celsius (American system), or kelvin (absolute temperature). Amount of kinetic energy present in a substance.

Answer 7

Temperature

Question 8

High Temp (hot)

Answer 8

Large K.E

Question 9

Low Temp (cold)

Answer 9

Low K.E

Question 10

Water Boils at

Answer 10

100 degrees celsius, 112 degrees Fahrenheit, 373 Kelvin

Question 11

• Derived dimension and derived units.
• lightness /heaviness of a substance
• Dense or not dense
• Depends on mass per given volume

Answer 11

Density (g/mL)

Question 12

The ratio of density of the substance being referred to and density of water.

Answer 12

Specific Gravity

Question 13

• Close to each other
• e.g. 76,77,76

Answer 13

Precise

Question 14

Close agreement in true value

Answer 14

Accurate

Question 15

(Internet, books)

Answer 15

True values

Question 16

Measurement can be

Answer 16

Metric System (Philippines)

Question 17

Metric System

Answer 17

Kilogram (mass)

Question 18

• Rounded off
• Reliability in terms of large numbers
• More accurate = more significant

Answer 18

Significant Figures

Question 19

• useful for very large and very small numbers, especially in non-SI units.
• Diamond is a pure carbon
  Arrangement of carbon

Answer 19

Scientific Notation

Question 20

empirical science

Answer 20

Chemistry

Question 21

Chemistry is studied by

Answer 21

• Measuring physical properties and observing chemical reactions. (Boiling point, formation of bubbles? change in color so there is a reaction)
• Supported by facts and evidences

Question 22

are created to explain observations and organize collected data.

Answer 22

Models

Question 23

recorded via measurements. (Recorded the
temperature)

Answer 23

Observation in Science

Question 24

included in observation

Answer 24

UNIT OF MEASUREMENTS

Question 25

- how close the observed value is to the “true” value.

Answer 25

Accuracy

Question 26

- the spread in values obtained from measurements; the reproducibility of values. - Trial 4 close to the trial 1,2,,3 - As long as magkalapit ‘yong values REGARDLESS if tama - how close a set of measurements are to each other

Answer 26

Precision

Question 27

- may make a measurement randomly too high or too low. (e.g., variation associated with equipment limitations) - There can be random errors like there is a problem in equipment. - Maling calibration = maling results

Answer 27

Random Error

Question 28

- may make a measurement consistently too high or too low. (e.g., the presence of an impurity) - More on the procedures - Contamination = impurity

Answer 28

Systematic Error

Question 29

fps system (foot – pound – second)

Answer 29

English System or British System

Question 30

cgs system (centimeter-gram – second) mks system (meter – kilogram – second) - SI (Systeme Internationale)

Answer 30

Metric System

Question 31

Chemists quantify data

Answer 31

expressing collected data with units and significant figures.

Question 32

- designate the type of quantity measured. - Units of mass are pound, grams, kilogram - Lengths are meters, millimeters

Answer 32

Units

Question 33

- provide scale to a base unit. - Centi - 100 - Milli - 1000

Answer 33

Prefixes

Question 34

- The base unit designates the type of quantity being measured. - meter

Answer 34

Base Units

Question 35

cm, dm

Answer 35

smallest Scale

Question 36

km

Answer 36

Bigger Scale

Question 37

indicate the amount of information that is reliable when discussing a measurement.

Answer 37

Significant Figure

Question 38

are the base units of science.

Answer 38

SI units (from French Système International)

Question 39

Some units comprise combinations of these base units

Answer 39

derived units