The electron configuration for an element in the halogen group should always end with Question 16 options:

ns2np6

ns2np5

ns2np4

ns2np2?

Among these properties of acids, bases, or both, which property is specific to acids only? A. Accepts protons B. Bitter taste C. Electrically conductive D. Slippery feel E. Sour taste

What happens when an electron moves from a high energy level to a lower one? A. it absorbs light B. it emits light C. it disappears D. it gets bigger

What is a glass rod used for in chemistry and biology laboratory?

Identify the brønsted base in the forward reaction hpo2 - 4 (aq) + hno3 (aq) ⇀↽ no - 3 (aq) + h2po - 4 (aq). 1. h2po - 4 (aq) 2. hno3 3. hpo2 - 4 4. no - 3

C. Chemical energy. What is the difference in chemical energy between organic and inorganic materials?

What type of acid is sulfuric acid? a - Monoprotic b - Diprotic c - Triprotic d - None of the above

Sunlight produces a spectrum of colors that includes what?

Which of the following is not a common use of gypsum? a. wallboard/drywall for homes b. a primary ingredient for toothpaste c. surgical splints and casts d. pH reducing agent for acidic soils

In which of the following are the symbol and name for the ion given correctly A. NH4+: ammonia; H+: hydride B. C2H3O2-: acetate; C2O4-: oxalite C. OH-: hydroxide; O2-: oxide D. PO3 3-: phosphate; PO4 3-: phosphite

If you add a large piece of zinc to a beaker of acid and, in a separate beaker, zinc shavings to a beaker of acid (of equal concentration/volume), the sample with the zinc shavings will react faster than the sample with the large piece.