1 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt Intro to Chemistry Atomic Structure Isotopes Classifying Matter Lab Work

2 What are the 4 states of matter?

3 Solid, Liquid, Gas, Plasma

4 What is chemistry the study of?

5 Matter, and how it reacts

6 How is the periodic table ordered? (2 ways)

7 By increasing atomic number & mass

8 What is the atomic mass, atomic number, chemical symbol, and phase for Copper?

, 29, Cu, Solid

10 What phase are most elements on the periodic table usually found in?

11 Solid

12 What are the three subatomic particles that make up an atom?

13 Protons, Neutrons, Electrons

14 Where are each of the subatomic particles located?

15 Protons & Neutrons in the nucleus, electrons orbiting the nucleus

16 Rank the subatomic particles by decreasing mass

17 Neutron >= Proton > Electron

18 Explain why atoms that have the same number of protons and electrons have no charge

19 Because the charges will cancel each other out

20 Cobalt has an atomic mass of 59 and an atomic number of 27. What does this information reveal about most cobalt atoms? A. They contain more neutrons than protons. B. They naturally have a net negative charge. C. They attract protons more strongly than electrons. D. They form ions with a charge of +27 in compounds

21 A. They contain more neutrons than protons

22 What are isotopes?

23 Substances with the same atomic number but different mass numbers

24 Can the mass number of an atom ever be smaller than its atomic number? Why?

25 No, the mass number is always greater than or equal to the atomic number

26

27

28 4. Write the following elements in isotope notation. a.17 protons, 18 neutrons, 17 electrons b.10 protons, 12 neutrons, 10 electrons c.15 protons, 20 neutrons, 15 electrons

29

30 The arrangement of particles in atoms is similar for all elements. Draw a model of the structure of a Hydrogen (H) atom. Include and label all the major components of the atom.

31 Put on board

32 Is water a pure substance or mixture? Explain

33 Pure Substance

34 Is salt water a pure substance or mixture? Explain

35 Mixture

36 Is Kool-Aid an element, compound, homogenous, or heterogeneous mixture? Explain

37 Homogenous mixture

38 Is Copper wire an element, compound, homogenous, or heterogeneous mixture? Explain

39 Element

40 Is oil & water an element, compound, homogenous, or heterogeneous mixture? Explain

41 Heterogeneous mixture

42 Is Aluminum or salt an element? Why?

43 Aluminum

44 Water is composed of Hydrogen (a gas) and Oxygen (a gas), but it is a liquid. Explain

45 Compounds have different properties than their elements

46 Is sugar & water before mixing an element, compound, homogenous, or heterogeneous mixture? Explain

47 Heterogeneous Mixture

48 Is sugar & water after mixing an element, compound, homogenous, or heterogeneous mixture? Explain.

49 Homogenous Mixture

50 Why do you think the balloon inflated in Monday’s lab pre- assessment?

51 Chemical reaction produced a gas