1st Semester Test

Front

What is a heterogeneous mixture?

Back

A mixture where the components are not uniformly distributed, and different parts can be seen and separated.

Front

What is an example of a chemical change?

Back

Paper being burned, which results in the formation of ash and smoke.

Front

What can be separated by physical means such as filtering, sifting, and evaporating?

Back

Mixtures, which consist of two or more substances that can be separated without changing their chemical properties.

Front

What is an example of a suspension?

Back

Italian Salad dressing, which contains particles that can settle over time.

Front

Which subatomic particles are the smallest?

Back

Electrons, which are negatively charged and much smaller than protons and neutrons.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout, where the individual components are not distinguishable.

Front

What is a pure substance?

Back

A material made of only one type of particle, which has consistent properties throughout.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together in a fixed ratio.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is an example of a mixture?

Back

Salad, which contains various ingredients that can be separated.