Download Name: Chapter 4 and 5 Study Guide Who was the Greek

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Chapter 4 and 5 Study Guide
1. Who was the Greek philosopher who first suggested the idea of atoms?
2. Describe Dalton’s model of the atom.
3. If 2 grams of element X combine with 5 grams of element Y to form a compound, how many grams of
element X will react with 15 grams of element Y?
4. J.J. Thompson’s experiments performed experiments with electricity in a vacuum tube. What did his
experiments provide the first evidence of?
5. Who provided the first evidence that an atom is mostly empty space, with the majority of its mass
located in its center?
6. In Rutherford’s experiment, what would have had to occur for an alpha particle to bounce straight back
toward its source?
7. Rutherford’s gold foil experiment provided evidence for which of the following statements?
a. Negative and positive charges are spread evenly throughout an atom.
b. Alpha particles have a positive charge.
c. Gold is not as dense as previously thought.
d. There is a dense, positively charged mass in the center of an atom.
8.
Which subatomic particle has a positive charge?
9. The number of _____________________ in an atom is used to identify one element from another.
10. Which statement about subatomic particles is NOT true?
a. Protons and neutrons have almost the same mass.
b. Protons and electrons have opposite charges.
c. Unlike protons and electrons, neutrons have no charge.
d. Protons and neutrons have the same charge.
11. What is the formula for finding the number of neutrons in an atom?
12. If you have an atom with an atomic mass of 23, and an atomic number of 11, how many neutrons are
there in this atom?
13. If you have an atom with an atomic mass of 42, and an atomic number of 20, how many neutrons are
there in this atom?
14. What has to happen for an electron in an atom to move to a higher energy level?
15. What can we see when the electrons in an atom move from their excited state back down to their
ground state?
16. What is going on inside the atoms when a neon light glows?
17. In a periodic table, a set of properties repeats from…
a. Element to element
b. Group to group
c. Column to column
d. Row to row
18. The usefulness of Mendeleev’s periodic table was confirmed by…
a. The discovery of subatomic particles.
b. Its immediate acceptance by other scientists.
c. The discovery of elements with predicted properties.
d. The discovery of the nucleus
19. Moving from left to right across a row of the periodic table, which value increases by exactly one from
element to element?
20. What is the unit used for measuring atomic mass?
21. Which list of elements contains only metals?
a.
b.
c.
d.
Carbon, iodine, tin
Tin, copper, cesium
Helium, iron, copper
Iodine, carbon, argon
22. At room temperature none of the metals are…
a.
b.
c.
d.
Soft
Liquids
Malleable
Gases
23. Group 7A of the periodic table contains the
a. most reactive nonmetals
b. most reactive metals
c. least reactive metals
d. least reactive nonmetals
24. Atoms of the most reactive elements tend to have how many electrons?
25. The reactivity of an element is closely related to
a. Its atomic mass
b. Attractions between its atoms
c. Its number of valence electrons
d. The ratio of protons and neutrons
26. Which of the halogens is the most reactive?
27. What element, with the exception of those in water, is the most abundant in your body?
28. The nuclei of isotopes contain different numbers of ____________________.
29. If element Q has 11 protons, its ____________________ number is 11.
30. Neutrons and ____________________ have almost the same mass.
31. John Dalton observed that elements always combine in the same ratio to form a particular
____________________.
32. Mendeleev’s periodic table was useful because it enabled scientists to predict properties of unknown
____________________.
33. The pattern of repeating properties of elements revealed in the periodic table is known as the
____________________.
34. Elements can be classified as metals, nonmetals, and ____________________.
35. In general, an ____________________ metal will be more reactive than an alkaline earth metal in the
same period.
36. The two most reactive groups of elements in the periodic table are the alkali metals and the
____________________.
37. Fertilizers usually contain two elements from Group 5A, which are ____________________ and
phosphorus.
**Review valence electrons, atomic number, and trends of the periodic table!!!!