Many elements that are essential for life, including nitrogen, oxygen, and carbon, are part of what classification?

A. Metalloids

B. metals

C. noble gases

D. nonmetals

Determine the element symbol, number of protons, and number of electrons for an ion that has a mass number of 56, 30 neutrons, and a charge of + 3.

Name something made of aluminum

Which of the following causes a chemical change

5 m is equal to: 500 mm 5,000 mm 50 cm 5,000 cm

Explain how a metamorphic rock to turn into a sedimentary rock

A solution is made by dissolving 25.20 g of aluminum acetate in 185.0 mL of water. What is the concentration of acetate ions?

Which best describes how sediment forms? erosion breaks down rock and other material molten rock cools above earths surface loose material is cemented by pressure chemical changes cause sediment to compact together

How will you know whether a solution is saturated or supersaturated?

What is the number of moles of 27.6g of lithium?

Air is transferred from a 75 L tank where the pressure is 125 psi and the temperture is 288 k to a tire with a volume of 6.1 L and a pressure of 25 psi. What is the new temperture.