Ch 3 Chemistry – Flashcards

Which of the following is an element?

Helium is a(n) ______.

Coins in a piggy bank are an example of a(n) ________.

Gold in a ring is a(n) _______.

Which of the following is not an element?

Which of the following is a homogeneous mixture?

Which of the following is a heterogeneous mixture?

Which of the following is not a characteristic of the solid state?

Which of the following is an example of a physical change?

Which of the following would not be a physical change?

Which of the following is a chemical change?

Which of the following is a physical change?

Which of the following is a chemical change?

Which of the following is a physical change?

Which of the following is a property of a solid?

In a gas, the distance between the particles is ______.

Which of the following is a physical property of both liquids and gases?

Which one of the following properties describes a liquid?

In which of the following would the particles move most rapidly?

If the temperature is -55 degree F, what is the corresponding temperature on the Kelvin scale?

If the temperature is 20 degree C, what is the corresponding temperature on the Fahrenheit scale?

A patient has a temperature of 38.5 degree C. What is the temperature in degrees Fahrenheit?

The temperature of liquid nitrogen is -196 degree C. What is the corresponding reading on the Kelvin scale?

On a hot day, the thermometer read 95 degree F. What is the temperature in degrees Celsius?

A temperature of 41 degree F is the same as ______

Absolute zero is ______

An example of kinetic energy is _____.

The energy associated with the motion of particles in a substance is called ______.

Which of the following is an example of potential energy?

The phrase "ability to do work" is a definition of ______.

The energy stored in molecules is ______.

The energy of motion is referred to as _______.

Climate change is believed to result from all of the following except _______.

650. J is the same amount of energy as ______.

3.25 kcal is the same amount of energy as ______.

A potato contains 20 g of carbohydrate. If carbohydrate has a caloric value of 4 kcal/g, how many kcal are obtained from the carbohydrate in the potato?

One cup of kidney beans contains 15 g of protein, 1 g of fat, and 42 g of carbohydrate. How many kilocalories, to two significant figures, does this sample contain?

A cheeseburger from a fast food restaurant contains 19 g of fat, 20 g of carbohydrate, and 28 g of protein. How many kcal of energy does the cheeseburger contain? Give the answer to 2 significant figures.

A serving of fish contains 50 g protein and 4 g of fat. If protein has a caloric value of 4 kcal/g and fat has 9kcal/g, how many kcal are in the serving? 2 sig fig

A slice of pizza contains 28 g of carbohydrate, 13 g of protein and fat. If the pizza contains 280 kcal, how many grams of fat are present?

The dietary calorie (Cal) is equal to ______.

The specific heat of a substance is the amount of heat needed to _______.

A kilocalorie of heat is required to raise the temperature of ______.

How many calories are required to raise the temperature of a 35.0 g sample of iron from 25 degree C to 35 degree C? Iron has a specific heat of 0.108 cal/g degree C.

How many calories are required to raise the temperature of a 150. g sample of gold from 25 degree C to 175 degree C? The specific heat of gold is 0.0308 cal/g degree C.

How many calories are required to increase the temperature of 13 g of ethanol from 11 degree C to 23 degree C? The specific heat of ethanol is 0.59 cal/g degree C.

The specific heat of copper is 0.0920 cal/g degree C, and the specific heat of silver is 0.0562 cal/g degree C. If 100 cal of heat is added to one g of each metal at 25 degree C, what is the expected result?

Which of the following quantities is not required to calculate the amount of heat energy required to heat water from 25 degree C to 55 degree C?

Raising the temperature of 10.0 g of water from 10.0 degree C to 20.0 degree C requires 100.0 cal of energy, while raising the temperature of 10.0 g of aluminum from 10.0 degree C to 20.0 degree C requires 22.0 cal. More calories are required to hear the water because ______.

The number of calories needed to raise the temperature of 32 g of water from 12 degree C to 54 degree C is _______

The physical state(s) present when a substance is melting is (are) ______.

If the heat of fusion for water is 80. cal/g, how many calories are needed to melt 45.0 g of ice at 0 degree C?

The formation of a gas resulting from the escape of high-energy particles from the surface of a liquid is known as _______.

When a solid is converted directly to a gas, the change of state is called _______.

A burn from steam at 100 degree C is expected to be more severe than a burn from boiling water at 100 degree because ____.

The heat of fusion for water is 80. cal/g. How many calories of heat are released when 20.0 g of water at 0 degree C is frozen to ice?

The heat of fusion for water is 80. cal/g. How many calories of heat are needed to melt a 35 g ice cube that has a temperature of 0 degree C.

The heat of vaporization for water is 540 cal/g. How many kilocalories are needed to change 22 g of liquid water to steam at 100 degree C?

If the heat of vaporization for water is 540 cal/g, how many kilocalories are released when 5.00 g of steam is converted to liquid at 100 degree C?

Which of the following does not involve a change of state?

A heating curve illustrates _______.

On a heating curve a plateau corresponds to ______.

Which of the following does not represent a step on the heating curve of water?