Pure Substances vs Mixtures

The basic building blocks of matter are called

• Protons

• Atoms

• Pure Substances

• Compounds

Tags

NGSS.MS-PS1-1

Water is an example of a

• Mixture

• Colloid

• Elemental Molecule

• Compound Molecule

Carbon is considered an element. Carbon dioxide is considered a compound because it is

• a gas at room temperature

• made of two different elements

• given off by green plants

• useful to human beings

Tags

NGSS.MS-PS1-1

How many of these substances are elements?

NaCl, O, Au, NaOH, H, Mg, Fe

• 2

• 3

• 4

• 5

An _______ is a substance that is made up of a single type of atom?

• Element

• Compound

• Ion

• Molecule

Tags

NGSS.MS-PS1-1

Lemonade is a

• homogenous mixture

• heterogenous mixture

• element

• Colloid

Saltwater and sand can be separated with

• a magnet

• a filter

• water

• sieve

What do elements, compounds and mixtures all have in common?

• They are all homogenous mixtures.

• They all are suspensions.

• They are all made up of atoms.

• The have the same boiling point.

Tags

NGSS.MS-PS1-1

What is the best separation device for toothpicks and marbles?

• Your hand

• Water

• Sieve

• Hot plate

A _______ is a substance that has definite physical and chemical properties such as boiling point and appearance.

• Solution

• Pure Substance

• Mixture

• Colloid