Select the correct answer.

Which hydrocarbon is an unsaturated hydrocarbon?

A.

2-methylheptane

B.

3-ethylpentane

C.

1-hexene

D.

cyclopentane

Using the periodic table, choose the more reactive nonmetal. Br or As

Why do compounds with the same atoms have different chemical and physical properties?

How does the flame test provide support for quantized energy levels?

How many moles of agcl are contained in 244 ml of 0.135 m agcl solution. the density of the solution is 1.22 g/ml?

Which statement best explains how atmospheric dust particles influence the water cycle? (1) Dust particles are the main source of dissolved salts in the sea. (2) Dust particles increase the capacity of the atmosphere to hold water vapor.

Which of the following is a measure of randomness in a system? A) entropy. B) kinetic energy. C) potential energy. D) chemical energy.

What substance can be broken down by chemical means? A) ammonia B) aluminum C) antimony D) argon (Castle learning question)

How the law of conservation of mass could be useful for investigating chemical changes

A covalent chemical bond is one in which outer-shell electrons of two atoms are shared so as to satisfactorily fill the outer electron shells of both atoms. protons and neutrons are shared by two atoms so as to satisfy the requirements of both atoms.

To break a chemical bond, energy must be (1) absorbed (2) destroyed (3) produced (4) released