Chemistry Quiz SM1review

When measuring out small amounts of liquids (35.0 mL) in chemistry, what type of equipment should you use?

• Beaker

• Graduated cylinder

• Erlenmeyer flask

• Test tube

Precision is defined as:

• Closeness to the true value

• Reproducibility of results

• Number of significant figures

• Measurement of mass

How many significant digits are in the number 0.04010?

• 2

• 3

• 4

• 5

Solve the problem using significant figures: 90,000 + 60.93

• 90060.93

• 90061

• 90000

• 90060

A student calculates the density of a metal to be 10.26 g/ml, the correct density is 11.96 g/ml. What is the percent error?

• 14.22%

• 12.42%

• 15.18%

• 10.12%

Put 99,900,000 into Scientific Notation.

• 9.99 x 10⁷

• 9.99 x 10⁶

• 9.99 x 10⁸

• 9.99 x 10⁹

What is the energy of a photon that has a frequency of 3.6 x 10¹² s⁻¹?

• 2.38 x 10⁻²¹ J

• 2.38 x 10⁻²² J

• 2.38 x 10⁻²³ J

• 2.38 x 10⁻²⁴ J

Anions are formed when (metals/nonmetals) (lose/gain) electrons and become (positive/negative).

• nonmetals, gain, negative

• metals, lose, positive

• nonmetals, lose, positive

• metals, gain, negative

Which type of bond is formed between two nonmetals?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

What is the prefix for the number 9 in covalent/molecular compounds?

• Octa-

• Nona-

• Deca-

• Hepta-