Which describes a property of all elements?

a. all elements are metals.

b. all elements have six electrons.

c. all elements are pure substance

d. all elements exist in the solid phase.

Which of the following pairs of elements is most likely to form an ionic bond? A. calcium and fluorine B. carbon and oxygen C. phosphorus and chlorine D. nitrogen and oxygen

Acids are usually corrosive, react violently with metals, taste sour, and are found in oranges and tomatoes. Answer a. True b. False

Which describes a property of water that allows plants to transfer it from their roots to their leaves? Water exhibits weak adhesion and cohesion, which allows capillary action to occur.

When a 3.22 g sample of an unknown hydrate of sodium sulfate, na2so4 ⋅ h2o (s), is heated, h2o (molar mass 18 g) is driven off. The mass of the anhydrous na2so4 (s) (molar mass 142 g) that remains is 1.42 g. The value of x in the hydrate is?

What type of reaction is represented by the following equation: KOH (aq) + NH₄Cl (aq) → NH₃ (aq) + KCl (aq) + H₂O (l)

Using density what is the mass in grams of 150mL of a liquid with a density of 1.4 g/mL

All of the following can be recycled except clothing aluminum cans compact fluorescent bulbs plastic drink bottles

Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.0 L of water upon warming from 25 ∘C to 50 ∘C.

Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of water molecules are included in the solid structure.

When you light a fire place what energy transformation takes place