End of Semester 1 Exam Review

Front

How does thermal energy move?

Back

Thermal energy moves from hotter to colder objects.

Front

Which substances dissolve in water?

Back

Sugar and salt dissolve in water.

Front

What is an example of a chemical change?

Back

Burning a candle is an example of a chemical change.

Front

What does the chemical formula H₂O represent?

Back

H₂O represents Hydrogen and Oxygen.

Front

What is the most crucial characteristic of Earth’s position for supporting life?

Back

The distance from the Sun is crucial for supporting life.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance without changing its identity, while a chemical change results in the formation of new substances.

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent, such as water.

Front

What is the significance of the Earth's tilt?

Back

The tilt of the Earth's axis affects the seasons and climate.

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the composition of a substance using symbols for its constituent elements.