1. Chapter 2 lesson 1 and 2 review answers

2. 1. A pure substance that cannot be broken down into other substances by chemical or physical means
Element 2.
3. 2 or more substances that mix together but not chemically combined
Mixture

3. 4. The study of the properties of matter and how matter changes
Chemistry
5. Is evenly mixed so that you cannot see the different parts
Homogeneous Mixture
6. A single kind of matter that is pure and has a specific
set of properties
Substance

4. 7. Shows the elements in a compound and the ratio of its atoms
Chemical Formula 8.
9. Formed when atoms combine to form a larger particle
Molecule

5. 10. Anything that has mass and takes up space
Matter
11. A mixture where you can see the different parts, its particles are not set in a particular ratio
Heterogeneous Mixture
12. The force that holds atoms together
Chemical Bond

6. 13. Basic particle from which all elements are made
Atom
14. A characteristics of a pure substance that describes its ability to change into a completely different substance
Chemical Property
15. A pure substance made up of 2 or more elements chemically combined
Compound

7. 16. A characteristics of a pure substance that can be observed without changing it into another substance
Physical Property
Endothermic: when a substance takes in energy(heat) to change its state of matter. Solid to a liquid
Exothermic: when a substance releases energy(heat) to change its state of matter. Liquid to a solid

8. 17. Put the following words in order from simplest to complex: Element, Atom, Compound, Mixture, Molecule
Atom
Element
Molecule
Compound
Mixture

9. 18. Atoms are held together by a _______
Chemical Bond
19. How are compounds separate?
During a chemical reaction
20. All matter is made up of_____________.
Atoms
21. _________ is formed when two atoms of the same element combine
Molecule

10. 22. How is a compound represented? And what does it mean?
In a chemical formula; it tells the types of elements and how many of each element there is in the compound
23. List 2 ways in which a mixture is different from a compound.
In a mixture, each substance keeps it own properties and it is not combined in a set ratio.
A compound is in a set ratio and its properties change.

11. 24. Compare and Contrast how elements are different than compounds.
An element is a pure substance that cannot be broken down into any other substance. A
Element
Both
Compound
Made up of only one type of atom
Can not be broken down into simpler substances
Pure substance
Can be chemically separated
Combined in a set ratio
Made up of 2 or more elements

12. 25. List the 4 ways you can separate a mixture.
Using a magnet
Filtration
Evaporation
Distillation (boiling)
26. A solution can be a_____
Mixture; it can be a liquid, solid or gas