Science
Grade 4
Chapter 13 Notes for TEST
Name ______________
Section _____________
Date _______________
Study these notes for the Chapter 13 TEST.
1. A mixture is matter that is made up of two or more substances that are physically combined.
2. A solution is a mixture in which particles that are evenly mixed and have the same properties.
3. A product is newly formed matter from a chemical reaction.
4. A reactant is the matter you start with in a chemical reaction.
5. Heat is the flow of thermal energy from a warm area to a cooler area.
6. Temperature is the measure of how hot or cold matter is.
7. Thermal energy is the total energy of the particles in a substance.
8. Physical change is a change in the way matter looks without changing into a new kind of matter.
9. Wood that has been burned is an example of a chemical change.
10. At 30 C is the temperature at which particles of matter move the fastest.
11. The process known as condensation happens when a gas cools and changes into a liquid.
12. When heat is added to matter, the particles move faster.
13. Seawater is considered a solution because salts are dissolved in water.
14. A chemical reaction is taking place when an antacid is dissolving in water.
15. The difference between a mixture and a solution is the parts of a mixture can be easily separated
and a solution is a special kind of mixture. The particles of a solution cannot be separated by
hand.
16. Benita combines eggs, flour, water, blueberries, and other ingredients to make muffins. The
chemical reaction taking place is the ingredients changed into a new substance. The properties of
the ingredients are different from the blueberry muffins.
17. The particles of a gas can be determined because they are very far apart.
18. A scientist can tell that a chemical change has taken place by noticing a color change or observe a
flame, bubbles or odor.
19. Examples of chemical changes are someone baking a cake, rust on a bicycle, or burning wood.
20. Water turns to ice because thermal heat from the water moves out of the freezer because the
freezer is cooler than the water.