1. Matter and Atoms Page 177 -181 Lesson 1 Unit 1

2. Anything that has mass and takes up space (volume) What is Matter?

3. What two characteristics must all matter have? Matter must have mass and volume ( take up space ) Q 1

4. Energy ( heat, sound, electricity) Forces (gravity) What is not matter?

5. All matter is made up of atoms An atom is the building block of matter What is matter made of?

6. 1. Pure substance – a composition of matter that is always the same Gold is composed of gold atoms Aluminum is composed of aluminum atoms NaCl is the same no matter where the table salt is found How is matter classified?

7. 2. A mixture – a combination of matter in no set amount Ex. Fruit salad Ex. Ice cream Ex. Iced Tea How is matter classified?

8. Matter is classified as either a pure substance or a mixture Q2

9. An element is a pure substance made up of ONLY ONE kind of ATOM. What element is this the atomic structure of? Elements

10. What if you take a piece of pure gold and spray paint it silver Can the GOLD be considered SILVER? Gold Atoms are now Silver Atoms? NO – Atoms do not change if color changes What if………?

11. Why is gold a pure substance? Gold is a pure substance because gold is only composed of gold atoms. Q3

12. How are Atoms and elements related? Atoms make up elements Q 4

13. What is the smallest part of an element? The smallest part of the element is the atom Q 5

14. Atom – smallest part that contains the same properties as the element Molecules – two or more atoms are held together by chemical bonds as one unit. What is the smallest part of an element?

15. How many atoms do each of the molecules on the left diagram have? Each molecule has 2 atoms for a total of 16 atoms Q6

16. Many types of atoms Atoms can combine with each other in many ways These combinations form matter Atoms

17. A compound is a pure substance made of two or more elements that are chemically joined in specific combination. H 2 O C 6 H 12 O 6 CO 2 NaCl Compounds

18. How do elements and compounds differ? Elements are the individual parts that make up the compound (whole) H and O, make up H 2 O Q8

19. What information do the subscripts in a chemical formula provide? Subscripts tell us how many of each element are in the compound (ratio) H2O means H – O - H ( 2 hydrogen atoms and 1 Oxygen atom) Q9

20. What is the ratio of nitrogen atoms to oxygen atoms in dinitrogen trioxide? N 2 O 3 = 2:3 Q10

21. Which pair of compounds has a ratio of one N to two O atoms? NO 2 and N 2 O 4 Q 11

22. Why does the composition of mixtures vary? Mixtures are composed in no set order Q 12

23. Word Bank : Measure of Knowledge Matter Water Compound Subscript Mixture One Element Atom Pure

24. Physical Property – a way to describe matter without changing the atomic makeup of the matter Identify physical properties for: How is Matter described?

25. Your Answers: APPLEWATER

26. Adhesive Advertisement Addiction Addition Add Adjoining Adhere AD – PREFIX WORDS

27. Cohesive Cooperation Colonize Coexist Collaborate Colleague Co – PREFIX WORDS

28. 1. Adhesion – (“stick to”) when the molecules of a liquid are more attracted to another surface more then themselves Physical Properties of liquids

29. 2. Cohesion – (“with”) when molecules of a liquid are attracted to themselves more than other surfaces Physical Properties of liquids

30. 3. Surface tension – the molecules of water are very attracted to each other at the surface and form a “skin” Physical Properties of liquids