van Bergen - Trimester 1 Final Test

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout. An example is brass, which is a mixture of copper and zinc.

Front

What is the exception to the rule of thermal expansion?

Back

Water is the exception to the rule of thermal expansion; it expands when it freezes, unlike most substances that contract.

Front

How is kinetic energy calculated?

Back

Kinetic energy (KE) is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the kinetic energy of a 100 kg object moving at 5 m/s?

Back

1,250 J (calculated using KE = 1/2 mv²).

Front

What is filtration used for?

Back

Filtration is used to separate mixtures based on the size of their particles.

Front

What is power in physics?

Back

Power is the amount of work done in one second, measured in watts.

Front

What is the formula for calculating power?

Back

Power (P) = Work (W) / Time (t).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that retain their individual properties.

Front

What is the difference between a homogeneous and heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition, while a heterogeneous mixture has a non-uniform composition.

Front

What is thermal expansion?

Back

Thermal expansion is the increase in volume of a substance as its temperature increases.