Substances and Mixtures
CO2 (carbon dioxide) can not be part of (a mixture, a substance, an element, or a compound)
What is an element?
The solute in a salt water solution.
What is salt?
H3O+ is (hydronium, hydroxide, or water)
What is hydronium?
Matter that has fixed composition is a (solid, mixture, solution, or substance)
What is substance?
Substances that release hydronium ions are known as (solutes, acids, bases, or hydroniums)
What are acids?
Matter can be classified as _________ or ________ (substances, elements, mixtures, solutions)
What are substances and mixtures?
Polar molecules are distinguished from nonpolar molecules by (chemically bonded atoms, more than one atom of the same element, atoms of different elements, or electrons that are not shared equally)
What is electrons that are not shared equally?
HO- is (hydronium, hydroxide, or water)
What is hydroxide?
A solution could be (chlorine, salt water, muddy water, or milk)
What is salt water?
The pH scale goes from 0-14. The most acidic value is ________.
What is 0?
A substance is matter that always has ______ composition. (the same or different)
What is the same?
The amount of solute that is in a given amount of solution is called (solubility, concentration, saturation, or polarity)
What is concentration?
The pH of a neutral solution is ______ (4, 7, or 8)
What is 7?
A mixture in which the substances are not mixed evenly is called (homogeneous, heterogeneous, a solution, or saturated)
What is heterogeneous?
A solution that contains all the solute it can hold at a given temperature is (unsaturated, saturated, supersaturated, or soluble)
What is saturated?
Molecules in compounds contain atoms of at least two different elements. (True or False)
What is true?
Oil molecules are nonpolar. The kind of solvent needed to remove an oil stain would be (polar, nonpolar, acid, enzyme)
What are nonpolar molecules?
Vinegar is an acid so its pH would measure (2.5, 7, or 10.5)
What is 2.5?
The substance being dissolved in a solution is the (solute, solvent, insolvent or substrate)
What is solute?
Nonpolar molecules do not have (double bonds, triple bonds, covalent bonds, or unbalanced charges)
What are unbalanced charges?
When substance are not evenly mixed, we classify that as a _________________ mixture. (heterogeneous or homogeneous)
What is heterogeneous?
Changing the temperature and pressure affects the (concentration, polarity, or solubility) of a solute in a solution.
What is solubility?
The number that describes how much more basic is a solution with pH 10 than a solution with pH 8 would be (2, 10, 100, or 1000) times.
What is 100 times?
Water is sometimes called the universal solvent because many different chemicals can dissolve in water. (True or False)
What is true?
pH is related __________ to the concentration of hydronium atoms in a solution. (identically, positively, inversely, or not at all)
What is inversesly?