What mineral is described below?

- White and glassy in appearance - Mass = 54 grams - Volume = 20 milliliters - Scratches a fingernail but not a penny - White streak - Fizzes in acid

A. Calcite

B. Gypsum

C. Quartz

D. Dolomite

What forces the inner core of Earth to remain solid?

Facts that describe a relationship in the natural world is called A a scientific theory B a hypothesis C a supreme court ruling D a scientific law

What type of radiation wave from the Sun does this graphic display? answer choices: x rays microwave visible ray infrared ray

You have 500 mL of 5 M HCl already made. You need to dilute the solution to 1 M HCl. How much water will you need to add?

The distance between the peaks of wave is called

What ecosystem is being described in the passage?

In the enzyme reaction above, catechol is the substrate, oxygen is a reactant, catechol oxidase is the enzyme, benzoquinone is the product, and water (H2O) is a by-product. Which of the following will decrease the rate of this reaction? a.

How do acids and bases affect the quality of freshwater sources?

How many moles of carbon dioxide can be produced when 3.05 of calcium carbonate are heated

Which organ system has the principal function of protection, water retention, thermoregulation, vitamin D synthesis, cutaneous sensation and nonverbal communication?