Chemistry Semester 1 Final Review

Front

What is the equivalent of 25 liters in deciliters?

Back

250 dL

Front

How do you convert micrograms to grams?

Back

To convert micrograms (μg) to grams (g), divide by 1,000,000. For example, 250,000 μg = 0.25 g.

Front

What ions are present when KNO3 is dissolved in water?

Back

K+ and NO3−

Front

What type of bond is formed between atoms with electronegativities of 3.16 and 2.19?

Back

Polar covalent bond.

Front

What is the name of the compound Sr(OH)2?

Back

Strontium hydroxide.

Front

Define electronegativity.

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

How do you calculate the number of grams from a given number of micrograms?

Back

Divide the number of micrograms by 1,000,000.

Front

What is the formula for calculating molarity?

Back

Molarity (M) = moles of solute / liters of solution.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of bond where electrons are shared unequally between two atoms.