Elements, Compounds, and Mixtures Quiz

A teacher makes the following statement: "Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C." What topic is the teacher most likely talking about? -distillation of a mixture -filtration of a pure substance -evaporation of a mixture -sorting of a pure substance

distillation of a mixture

Which cannot be separated into simpler substances? -compound -element -solution -mixture

element

Which is a substance that is made up of only one type of atom? -compound -element -solution -mixture

element

Which best describes an element? -a pure substance -a type of a mixture -a pure compound -an impure substance

a pure substance

The table describes how some substances were formed. Based on the given descriptions, which substance is most likely a mixture? -P -Q -R -S

R

Which is a characteristic of mixtures? -They are chemically bonded together. -They can be classified as pure substances. -They have fixed ratios between their components. -They can be separated by physical processes.

They can be separated by physical processes.

What can a drop of liquid mercury be described as? -a pure substance and a compound -an impure substance that is reactive -an impure substance that is unreactive -a pure substance and an element

a pure substance and an element

An emerald can be described as -a pure substance because it is a compound. -a pure substance because it is an element. -an impure substance because it is chemically combined. -an impure substance because it is a mixture.

a pure substance because it is a compound.

Which best describes a compound such as sodium chloride? -a pure substance that can be separated into different elements by physical means -a mixture of two common substances that can be separated by chemical means -a mixture of two common elements that can be separated by physical means -a pure substance that can be separated into different elements by chemical means

a pure substance that can be separated into different elements by chemical means

Which method would be best for separating the components of a mixture that is made from two different liquids? -distillation -evaporation -filtration -sorting

distillation