Science 6 Chapter 7
A solution has the same properties throughout. It contains **** particles that are too small to see.
A **** contains larger particles than a solution. The particles are still to small to be seen easily but are large enough to scatter a light beam.
Unlike a solution, a **** does not have the same properties throughout. It contains visible particles that are larger than the particles in solutions or colloids.
When a solution forms, particles of the solute leave each other and become surrounded by particles of the ********.
Solutes **** the freezing point and raise the boiling point of a solvent.
To measure *****, you compare the amount of solute to the amount of solvent or to the total amount of solution.
Solubility can be used to help identify a substance because it is a ********* property of matter.
An *** is a substance that tastes sour, reacts with metals and carbonates, and turns blue litmus paper red.
A *** is a substance that tastes bitter, feels slippery, and turns red litmus paper blue.
Acids and bases have many uses around the home and in *****.
An acid is any substance that produces **** ions in water.
A base is any substance that produces ********* ions in water.
A low ***
tells you that the concentration of the hydrogen ions is high. In contrast a high
***** tells you that the concentration of hydrogen ions is low.
In a ***** reaction, an acid reacts with a base to produce a salt and water.
Foods must be broken down into simpler substances that your body can use for raw materials and ****.
Some digestive enzymes work at a low pH. For others, the pH must be high or ******.
****** has a pH of zero
**** has a pH of seven
has a pH of 14
a compound that changes color when it contacts an acid or a base
the physical part of digestion is called
a solution in which more solute may be dissolved at a given temperature
paper used as an indicator
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