Classify each example as an element, a compound, a heterogeneous mixture, or a h
ID: 895380 • Letter: C
Question
Classify each example as an element, a compound, a heterogeneous mixture, or a homogeneous mixture:
1) Gold
2) Carbon Dioxide
3) A liquid that separates into three distinct layers
4) A clear liquid that when an electric current passes through it produces two gases that cannot be broken down into simpler substances
5) A red-orange solid with a melting point of 1085 C that cannot be broken down into simpler substances by chemical processes
6) A uniform clear liquid that when evaporated produces a transparent gas and a white solid
Explanation / Answer
element --> can be found in the preiodic table
a compound --> must be at least 2 atoms present
heterogeneous mixture --> solute + solvent is present; visible phases difference
homogeneous mixture --> solute + solvent is present; in a single phase
1) Gold --> Au, can be found in the preiodc table, ELEMENT
2) Carbon Dioxide --> CO2, it has at least two atoms, so COMPOUND
3) A liquid that separates into three distinct layers --> three layers, three phases, this is HETEROGNEOUS MIX
4) A clear liquid that when an electric current passes through it produces two gases that cannot be broken down into simpler substances --> A single phase, use HOMOGENEOUS MIX
5) A red-orange solid with a melting point of 1085 C that cannot be broken down into simpler substances by chemical processes --> This must be an element, since it can't be broken down
6) A uniform clear liquid that when evaporated produces a transparent gas and a white solid --> This must be an HOMOGENEOUS mix, since it is a mixture + only 1 phase is visible