All compounds are made of

A.) atoms of two or more elements

B.) two or more atoms of the same element

C.) atoms arranged in a crystal

D.) atoms joined by covalent bonds

I think its D.) but im not sure.!

Which of the following statements is true? The freezing and boiling temperatures of a substance are the same. The freezing and condensation temperatures of a substance are the same. The freezing and melting temperatures of a substance are the same.

Two water manometers are connected to a tank of air. One leg of the manometer is open to 100kPa pressure (absolute) while the other leg is subjected to 90kPa. Find the difference in deflection between both manometers, Delta h_a - Delta h_b.

Which part of a circuit creates an electric force field that makes it possible for the circuit to work? -bulb -buzzer -motor -voltage source

When X-rays of wavelength λ = 0.2 nm are reected o the face of a crystal, a Bragg maximum is observed at a glancing angle of θ = 17.5 o, with sucient intensity that it is judged to be rst order.

Which causes an air conditioner

Why do cell sometimes need to use active transport?

Why is carbon and nitrogen important?

Gizmo answer sled wars

3. What is the kinetic energy of a 1300 kg car moving at 26.3 m/s?

Kendall has empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a balance and a marble. Which statement best describes what Kendall can do? A.