U7 Test Review

Front

What is the lowest possible temperature on the Kelvin scale?

Back

Absolute zero is the lowest possible temperature, defined as 0 Kelvin.

Front

What is the melting point of a substance at 1 ATM of pressure if it is 60 degrees Celsius?

Back

The melting point of the substance is 60 degrees Celsius.

Front

What is the state of a substance at 1 ATM of pressure at 80 degrees Celsius?

Back

At 80 degrees Celsius, the substance is in a liquid state.

Front

In a phase diagram, what letter represents a gas?

Back

The letter B represents a gas in the diagram.

Front

How many Joules of energy are required to change 10 grams of water from 20°C to 90°C?

Back

2926 Joules of energy are required.

Front

Define absolute zero.

Back

Absolute zero is the theoretical temperature at which a substance has minimum thermal energy, equivalent to 0 Kelvin or -273.15°C.

Front

What is the boiling point of water at 1 ATM pressure?

Back

The boiling point of water at 1 ATM pressure is 100 degrees Celsius.

Front

What happens to the state of water when it is heated from 0°C to 100°C?

Back

Water changes from solid (ice) to liquid (water) and then to gas (steam) as it is heated.

Front

What is the specific heat capacity of water?

Back

The specific heat capacity of water is approximately 4.18 Joules per gram per degree Celsius (J/g°C).

Front

What is the relationship between pressure and boiling point?

Back

As pressure increases, the boiling point of a liquid also increases.