The amount of energy needed to change a material from a liquid to a gas is the heat of __________.

The maximum amount of a solute that can be dissolved in a given amount of solvent is its __________.

When two or more substances are physically combined, the result is a(n) __________.

The air that you breathe is an example of a(n) __________ solution.

As a sample of matter is heated, its particles __________.

The most common state of matter in the universe is __________.

The color of ink is a __________.

Three examples of physical changes are

In a solution, the substance that is being dissolved is the __________.

Atoms of elements in the same group of the periodic table share the same

The atomic number of magnesium is 12. Therefore its nucleus must contain

A neutral atom may contain 8 protons

An element with 5 protons, 6 neutrons, and 8 electrons has an atomic number of

An element with 5 protons, 6 neutrons, and 8 electrons has a mass number of

The farther an electron is from the nucleus, the more __________ it has.

The majority of the mass of the atom is located in the __________ and the majority of the volume of the atom is located in the __________.

Atoms of the same element that have different numbers of neutrons are called

The total number of electrons in the outer shell of a sodium atom is

Which particles determine the atomic number of an element?

The chemical bond formed when two atoms share electrons is called a(n)

Which pair of atoms will combine with each other and form an ionic bond?

Which element is most likely to gain electrons in a chemical reaction?

Atoms become positive ions by

Which formula represents a substance that contains covalent bonds?

Anions are formed by

How does an atom of aluminum become an ion?

Which element will most likely form an ionic bond with chlorine?

How many electrons are shared between the hydrogen atoms in a molecule of H₂ gas?

Which atoms are most likely to form covalent bonds?

Each substance to the right of the arrow in a chemic equation is a(n) __________.

The numbers that go before symbols and formulas in a chemical equation are __________.

Substances that speed up, chemical reactions are called __________.

What mass of hydrogen (H₂) was produced in the reaction in the image?

When objects are burned a __________ reaction has occurred.

The burning of wood in a campfire that produces heat and light would be both an __________ and an __________ reaction.

Brad and Julian conducted several tests to determine the properties of silver metal. They noted that it was white, and conducted both electricity and heat. They computed the density to be 10.49 g/cm³. Silver did not react with water but in nitric acid it released a gas. What evidence above supports a chemical change in silver?

In a chemical equation, the symbol that means dissolved in water is __________.

What type of reaction is the following chemical reaction? CH₃CH₂OH + 3O₂ ---> 2CO₂ + 3H₂O

Which chemical reaction represents a double displacement reaction?

The speed you read on a speedometer is __________.

3 m/s north is an example of a(n) __________.

A car moves around a wide turn going 45 mi/hr the whole time. The car has a constant ___________.

If you ride your bicycle down a straight road for 500 m then turn around and ride back to your starting point, your distance is __________ your displacement.

An object in motion must be undergoing a change of

A softball pitcher throws a ball at 42 meters per second. If the batter is 18 meters from the pitcher, approximately how much time does it take for the ball to reach the batter? (t= d / S)

The graph in the image shows the relationship between distance and time for a moving object. According to the graph, the object is

A high-speed train travels with an average of 227 km/hr. The train travels for 2 hrs. How far does the train travel? (d= S x t)

A cross-country runner runs 10 km in 40 minutes. What is his average speed? (S= d / t)

The graph in the image represents the change in velocity of four cars over a period of 10 hours. Which line represents the car with the greatest acceleration?

The __________ energy of an object increases with its height.

When water at 10^oC is heated to 20^oC its kinetic energy

The law of __________ states that energy in a system can change forms but can never be created or destroyed.

The kinetic energy of an object increases as its __________ increases.

How much force is required to lift a rock a vertical distance of 8 m if 80 J of work were done? (F= W / d)

As the time required to do a given amount of work decreases, the power developed __________.

The diagram in the images shows four locations in a temperature field. The temperature of each location is given in degrees Celsius. Heat energy will normally flow from:

Energy stored in food would be considered

Conduction is the transfer of heat energy by __________.

An example of an energy conversion from kinetic to thermal energy would be

The force or push that causes electric charges to move is called __________.

Electric charges always flow from __________ areas to __________ areas.

A material through which electrons do NOT flow easily is a(n) __________.

Which of the following statements about electric charge is true?

Mr. Robinson and his class are conducting an experiment. The class needs to choose a good insulator. Which of the following could be used as an insulator?

Which of the following will increase the resistance of a wire?

What is the current produced by a 9-volt battery flowering through a resistance of 0.2 ohms? (I= V / R)

Which two areas of physical science are closely related to the development of electric motors and generators?

Which of the following will decrease the strength of the magnetic field around a wire?

Silver has a resistance of 0.0198 ohms. What voltage would produce a current of 100 amps? (V= I x R)

Refraction occurs when a wave changes its __________ as it passes through a different medium.

Houses with carpet are much quieter than houses with tile or hardwood floors because of sound wave

Which is an example of a compressional wave?

Increasing the amplitude of a sound wave will make it __________.

Ocean waves crash on the beach at a velocity of 3.5 m/s. If the distance between the crests of each wave is 4 m, find the frequency of the waves. (f= $$\lambda$$ / v)

The picture shows which wave behavior?

Look at the image, explain why it appears broken.

An echo is an example of sound wave

What is the velocity of a wave having a frequency of 25 Hz and a wavelength of 10 m? (v= $$\lambda$$ x f)

A glass prism is able to bend light because