Identifying Minerals Through Key Tests

What is the primary goal of the video?

• To explore the history of minerals

• To understand the physical characteristics of minerals and their identification

• To learn about the economic value of minerals

• To study the chemical composition of minerals

Why is color not a reliable characteristic for identifying minerals?

• Because all minerals are colorless

• Because different minerals can have the same color

• Because color is only visible under a microscope

• Because color changes with temperature

What is the color of the streak of Galena?

• Blackish

• Blueish

• White

• Yellowish white

Which type of luster describes minerals that look like chunks of metal?

• Waxy

• Pearly

• Vitreous

• Metallic

What term is used to describe how a mineral breaks along smooth planes?

• Fracture

• Hardness

• Luster

• Cleavage

Which mineral is known to break into thin, flexible sheets?

• Calcite

• Galena

• Biotite Mica

• Olivine

What is the hardest mineral on the Mohs scale?

• Diamond

• Corundum

• Topaz

• Quartz

Which mineral can be scratched by a fingernail?

• Calcite

• Fluorite

• Talc

• Gypsum

What happens to calcite when exposed to weak acids?

• It becomes magnetic

• It glows under ultraviolet light

• It fizzes and bubbles

• It changes color

Tags

NGSS.MS-PS1-2

What characteristic of minerals is determined by the internal arrangement of atoms?

• All of the above

• Hardness

• Luster

• Color