A) Calculating exact chemical composition
B) Determining the age of rocks
C) Roughly identifying minerals
D) Measuring precise electrical conductivity

A) It is a liquid substance
B) Its hardness changes based on temperature
C) It reacts with atmospheric gases
D) It is a rock made of several minerals

A) The best grinding medium to use
B) The color of the final powder
C) The total volume of the product
D) The magnetic properties of the ore

A) Food processing
B) Electronic manufacturers
C) Textile production
D) Agriculture

A) It is only valid for metals
B) Lack of precision
C) It cannot be used on solids
D) It is too expensive to use

A) 1
B) 2
C) 10
D) 7

A) 3
B) 1
C) 8
D) 5

A) 5–6
B) 9–10
C) 7–9
D) 2–4

A) 4–5
B) 6–6.5
C) 8–9
D) 2–3

A) 9
B) 4
C) 1
D) 6

A) Chemical titration sets
B) X-ray scanners
C) Magnifying thermometers
D) Scratch kits

A) Mixtures cannot be scratched
B) The scale only applies to liquids
C) Hardness may be difficult to determine
D) Mixtures always have a hardness of zero

A) Plastic casing
B) Power cables
C) Cover glass
D) Wiring insulation

A) Pliny the Elder
B) Friedrich Mohs
C) Isaac Newton
D) Theophrastus

A) Ratio scale
B) Quantitative interval scale
C) Qualitative ordinal scale
D) Logarithmic scale

A) Aristotle
B) Friedrich Mohs
C) Pliny the Elder
D) Theophrastus

A) 5
B) 9
C) 1
D) 10

A) Yes, always
B) Only if they are deep
C) Only if they affect structural integrity
D) No

A) Spectrometer
B) Sclerometer
C) Barometer
D) Thermometer

A) 1812
B) 1777
C) 1900
D) 1877