What are the fixed reference points on the Celsius thermometer? (1) 32 and 100 (2) 0 and 212 (3) 32 and 212 (4) 0 and 100

Which term represents a form of energy? (1) heat (2) degree (3) kilojoule (4) temperature

Which list includes three forms of energy?

(1) chemical, mechanical, electromagnetic

(2) chemical, mechanical, temperature

(3) thermal, pressure, electromagnetic

(4) thermal, pressure, temperature

What is the freezing point of water on the Kelvin scale at standard pressure? (1) 0 K (2) 32 K (3) 100 K (4) 273 K

What reference points do we use in calibrating the scale of a thermometer? What temperature on the Celsius scale do we assign to each of these reference points?

Solve the given systems of equations by using the inverse of the coefficient matrix. Use a calculator to perform the necessary matrix operations and display the results and check. See Example 4.

$$\begin{array}{l}3x-2y=5 \\ 9x+4y=-5\end{array}$$

Which of the following is not a form of energy? (a) light (b) sound (c) air (d) electricity

Which property is a measure of the average kinetic energy of the particles in a sample of matter?

(1) mass

(2) temperature

(3) pressure

(4) density

As a substance changes from a liquid to a gas, the average distance between molecules (1) decreases (2) increases (3) remains the same

Which occurs as a substance melts? (1) It changes from a solid to a liquid and heat is absorbed. (2) It changes from a solid to a liquid and heat is released. (3) It changes from a liquid to a solid and heat is absorbed. (4) It changes from a liquid to a solid and heat is released.

Predict whether the reaction of each of the following acids and bases will yield an acidic, a basic, or a neutral solution. Explain your answer for each. a. sulfuric acid, $H_{2}SO_{4}$, and ammonia, $NH_{3}$ b. formic acid, HCOOH, and potassium hydroxide, KOH c. nitric acid, $HN0_{3}$, and calcium hydroxide, $Ca(OH)_{2}$

Find the derivatives of the functions. Assume that a and k are constants. $y = 5 \cdot 5 ^ { t } + 6 \cdot 6 ^ { t }$

Indicate whether J.J. Thomson would have agreed or disagreed with each of the following statement. "Atoms of all elements contain electrons." Give reasons for your answer.

At STP, which element has a definite shape and volume? (1) Ag (2) Hg (3) Ne (4) Xe