Principles of Chemistry and Chemical Reactions Quiz

Homogeneous material with fixed chemical composition.

Two hydrogen atoms bonded to one oxygen atom.

Equal concentrations of H+ and OH- ions.

Does not contribute significantly to the greenhouse effect.

Element with atomic number 26.

Not a physical substance but a property.

Sodium chloride compound.

Formation of a new substance with different properties.

Number of atoms, ions, or molecules in one mole of a substance.

Release of heat energy to surroundings during reaction.

Direct transition from solid to gas phase.

Indicator of acidic solutions.

Electrical current used to drive non-spontaneous reaction.

Inert, non-reactive gas with filled valence shell.

Total mass of reactants equals total mass of products in a chemical reaction.

Chemical compounds made of elements in fixed proportions.