Cuestionario sobre Materia

What are the two main categories of matter?

• Pure substances and mixtures

• Atoms and molecules

• Solids and liquids

• Elements and compounds

What is a physical property?

• A property related to toxicity

• A property that alters the chemical composition

• A property that can be observed without changing the chemical composition

• A property that describes reactivity

Which of the following is an intensive property?

• Mass

• Volume

• Ductility

• Temperature

What describes a homogeneous mixture?

• It can be easily separated

• It is uniform in appearance

• It contains only one type of substance

• It has two or more distinct regions

What is an example of a physical change?

• Dissolving sugar in water

• Oxidation of iron

• Combustion of paper

• Fermentation of grapes

What is reactivity?

• The ability of a material to change state

• The ability of a material to interact with others

• The ability of a material to conduct electricity

• The ability of a material to be molded

What method is used to separate mixtures based on the size of the particles?

• Evaporation

• Distillation

• Filtration

• Decantation

Which of the following is a chemical property?

• Color

• Density

• Toxicity

• Shape

What is a chemical change?

• A change in the state of matter

• A change in the shape of an object

• A change in temperature

• A change that alters the chemical identity of a substance

What is a pure substance?

• A material that consists of only one type of matter

• A material that can be separated physically

• A mixture of several compounds

• A material that has variable properties