Elements, compounds and separation techniques

Charcoal powder is insoluble in water. When water is filtered, the charcoal powder becomes the _______.

• solute

• residue

• filtrate

• solvent

Which of the following techniques is used to separate the components of a solution?

• filtration

• decantation

• evaporation

• physical manipulation

During distillation, the pure liquid that is collected at the conical flask is known as

• filtrate

• distillate

• crystals

• water

Evaporation to dryness used ______________________________ to remove liquid from the solution.

• Solubility

• Heat

• Magnetic attraction

What is the name of this physical method?

• Crystallisation

• distillation

• evaporation

• filtration

The simplest natural substance is called a(n)

• Element

• Compound

• Mixture

• Solution

Two or more elements chemically combined together are called a

• Element

• Compound

• Mixture

• Solution

The smallest amount you can have of one element is a(n)

• Molecule

• Compound

• Atom

• Sprinkle

Scientists use a _____________ as an abbreviation for an element name.

• Atom

• Molecule

• Compound

• Chemical Symbol

H2O is an example of

• Compound

• Element