What are isotopes?

• Atoms with the same number of protons and neutrons

• Atoms with the same number of electrons but different protons

• Atoms with the same number of protons but different neutrons

• Atoms with the same number of neutrons but different electrons

Which of the following is a characteristic of crystalline solids?

• Atoms with no specific arrangement

• Atoms that are always amorphous

• Atoms arranged in an orderly pattern

• Atoms arranged randomly

What determines the hardness of a mineral?

• The mineral's density

• The color of the mineral

• The atomic mass of the mineral

• The strength of the bonds within the crystal structure

Which mineral property is primarily influenced by atomic mass?

• Density

• Color

• Cleavage

• Hardness

What percentage of Earth's crust is made up of silicate minerals?

• Over 90%

• Over 70%

• Over 30%

• Over 50%

What is the basic building block of silicate minerals?

• SiO3

• SiO4

• SiO2

• SiO5

Which of the following is a carbonate mineral?

• Gypsum

• Hematite

• Calcite

• Pyrite

What is the main difference between gypsum and anhydrite?

• Anhydrite is a silicate, gypsum is not

• Gypsum contains water, anhydrite does not

• Gypsum is a silicate, anhydrite is not

• Anhydrite contains water, gypsum does not

Which mineral is commonly known as fool's gold?

• Calcite

• Fluorite

• Pyrite

• Hematite

What are native elements?

• Elements that are artificially created

• Compounds of multiple elements

• Elements that occur in nature in a pure form

• Elements that are always found in compounds