Chemical symbols

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1. The chemical symbol for gold is
A) Au B) G C) Go D) Gd E) Ag

2. Which element has the chemical symbol "Si"?
A) Strontium B) Silicon C) Sulfur D) Scandium E) Sintinium

3. Nitric acid has the chemical formula HNO3. Which statement below is true?

A) The smallest particle of nitric acid contains one atom of helium, one atom of nitrogen and three atoms of cobalt. B) The smallest particle of nitric acid contains one atom of helium, one atom of neon and three atoms of oxygen. C) Nitric acid is made up of the elements nitrogen, neon and cobalt. D) Nitric acid is made up of the elements hydrogen, neon and cobalt. E) The smallest particle of nitric acid contains one atom of hydrogen, one atom of nitrogen and three atoms of oxygen.

4. The chemical symbol for sodium is
A) Sm B) S C) Na D) Mg E) So

5. Sulfuric acid has the formula H2SO4. What are the elements that form sulfuric acid?
A) Helium, sulfur and oxygen. B) Helium, strontium and oxygen. C) Hydrogen, strontium and oxygen. D) Hydrogen, sulfur and oxygen. E) Helium, sulfur and cobalt.

6. The formula for copper sulfate is CuSO4. Which comment is true?
A) Copper sulfate is made from six different elements. B) Copper sulfate is made from two different elements, sulfur and oxygen. C) Copper sulfate is made from three different elements, copper, strontium and oxygen. D) Copper sulfate is made from two different elements, copper and oxygen. E) Copper sulfate is made from three different elements, copper, sulfur and oxygen.

7. Nitrogen dioxide contains one nitrogen atom and two oxygen atoms. Which is the likely formula for nitrogen dioxide?
A) N2O B) NO2 C) NiO2 D) Co2Ni E) NnO2

8. Aluminium oxide contains aluminium and oxygen atoms in a ratio two aluminium atoms to three oxygen atoms. What is the formula of aluminium oxide?
A) AlOx3 B) AlO3 C) A2O3 D) Al2O3 E) A2Ox3

9. Silicon dioxide contains one silicon atom and two oxygen atoms. Which is the likely formula for silicon dioxide?
A) S2O B) SO2 C) SnO2 D) SiO2 E) Sn2O

10. A substance has the formula KNO3. What elements form this compound.
A) Potassium, nitrogen and oxygen. B) Krypton, nitrogen and neon. C) Carbon, neon and oxygen. D) Potassium, neon and oxygen. E) Calcium, nitrogen and oxygen.