Physical Science Final Exam

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, indicating that mass is conserved during a chemical reaction.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is a double displacement reaction?

Back

A double displacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds.

Front

How do you calculate acceleration?

Back

Acceleration is calculated using the formula a = F/m, where a is acceleration, F is net force, and m is mass.

Front

Which groups in the periodic table are the most chemically reactive?

Back

The most chemically reactive groups are the Alkali Metals (Group 1) and the Halogens (Group 17).

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What is the formula for photosynthesis?

Back

The balanced equation for photosynthesis is 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂.

Front

What is the difference between potential energy and kinetic energy?

Back

Potential energy is stored energy based on an object's position, while kinetic energy is the energy of motion.

Front

What is the significance of the net force acting on an object?

Back

The net force determines the acceleration of an object according to Newton's second law of motion (F = ma).

Front

What are the characteristics of alkali metals?

Back

Alkali metals are highly reactive, have one electron in their outer shell, and are soft, shiny metals.