أسئلة كيمياء للصف الأول الثانوي

Chemistry is the science that deals with:

• The study of animals

• The study of matter and its changes

• The study of planets

• The study of light

Matter is defined as:

• Anything that has no mass

• Anything that has volume only

• Anything that has mass and volume

• Anything that can be seen only

Which of the following is considered a chemical change?

• Dissolving sugar

• Melting ice

• Burning paper

• Condensing steam

A physical change is:

• A change that results in a new substance

• Does not affect the state of matter

• A change that does not result in a new substance

• Includes only chemical reactions

Which of the following is a pure substance?

• Air

• Steel

• Distilled water

• Sand

Mixtures can be separated by:

• Electrolysis only

• Chemical methods only

• Physical methods

• Cannot be separated

An element is:

• A substance made of two types of atoms

• Cannot be broken down into simpler substances

• A mixture of compounds

• A liquid only

A compound is:

• A mixture of two substances

• A chemical union of two or more elements

• Only one element

• An impure substance

Which of the following is a physical change?

• Rusting of iron

• Spoiling of milk

• Crushing a sugar cube

• Burning coal

A chemical change is always accompanied by:

• A change in volume

• A change in state

• The formation of a new substance

• Melting