4th 9 Weeks Exam Review 23-24

Determine the pH of a solution that has a hydrogen ion concentration of 6.3 x 10^-6.

• -6.8

• -0.80

• 0.80

• 5.2

The pH of a basic solution is —

• exactly 7

• less than 7

• greater than 7

• between 3 and 6

Predict the missing product in the acid-base reaction. HCl + NaOH → H₂O + _____ (make sure you use capital letters and lower case when writing correct symbols)

Temperature is the measure of the average ________ of all the particles in a sample.

• kinetic energy

• potential energy

• nuclear energy

• chemical energy

Photosynthesis, the reaction plants use to make sugar, is an endothermic reaction. Which statement below best describes the energy of the products and reactants in the photosynthesis reaction?

• Energy is given off during the reaction, making the energy of the products greater than the energy of the reactants.

• Energy is given off during the reaction, making the energy of the reactants greater than the energy of the products.

• Energy is absorbed during the reaction, making the energy of the reactants greater than the energy of the products.

• Energy is absorbed during the reaction, making the energy of the products greater than the energy of the reactants.

What amount of heat energy would be necessary to raise the temperature of 100 g of water at room temperature (25°C) to the boiling point (100°C)? The specific heat of water is 1.0 cal/g°C.

• 75 cal

• 100 cal

• 750 cal

• 7500 cal

Identify the missing particle in the following reaction:

• A. 212/83 Bi

• B. 212/79 Au

• C. 204/79 Au

• D. 204/83 Zr

Identify the missing particle in the following reaction:

• 11/4 Be

• 3/2 He

• 2/1 H

• 11/5 B

A nuclear fission reaction and a nuclear fusion reaction are similar because both reactions —

• release a large amount of energy.

• form light nuclides from heavy nuclides.

• form heavy nuclides from light nuclides.

• absorb a large amount of energy.

Nuclear fusion differs from nuclear fission because nuclear fusion reactions —

• form heavier isotopes from lighter isotopes.

• convert energy to mass.

• convert mass to energy.

• form lighter isotopes from heavier isotopes.