Ch 4 & 5 Clicker Review

Take the clicker that matches your number on the list

(see first lab table)!

Atoms and the Periodic Table

An atom is electrically neutral because

a. b. c. d.

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a. protons & electrons have opposite charges.

b. the charge of protons is balanced by the charge of neutrons.

c. the number of protons is equals the number of electrons.

d. Both a and c.

The electrons are found in

a. b. c. d.

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a. shells or energy levels.b. electron clouds.c. with the neutrons in the nucleus.d. both A & B.

The nucleus of the atom contains

a. b. c. d.

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a. only neutrons.b. most of the mass of the atom.c. electrons and protons.d. electrons and neutrons.

The order of elements in the periodic table is based on

a. b. c. d.

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a. the number of protons.b. the number of electrons.c. the number of neutrons.d. the average atomic mass.

All elements in the same group have the same number of _____ and all elements in the same

period have the same _____.

a. b. c. d.

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a. number of shells; oxidation number.b. valence electrons; oxidation number.c. valence electrons; number of shells.d. shells; number of valence electrons.

Carbon and other nonmetals are found in which area of the periodic table?

a. b. c. d.

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a. on the left sideb. on the right sidec. in the middle column of the

periodic tabled. in the bottom rows

What is the charge of an electron?

a. b. c.

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a. Negativeb. Positivec. Neutral

Where are the electrons with the most energy?

a. b. c. d.

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a. Closest to the nucleusb. Furthest from the nucleusc. In the middle shellsd. They all have the same energy no

matter where they are located.

The order of the periodic table is based on the

a. b. c. d.

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a. number of protonsb. number of neutronsc. atomic massd. charge of the nucleus

Atoms of elements that are in the same group have the same number of

a. b. c. d.

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a. protonsb. neutronsc. valence electronsd. mass

Valence electrons tell us an atom’s

a. b. c. d.

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a. massb. reactivityc. charged. period

Which of the following elements is an alkali metal?

a. b. c. d.

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a. Calcium - Cab. Magnesium - Mgc. Mercury - Hgd. Sodium - Na

Why are alkali metals so quick to react?

a. b. c. d.

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a. They have small masses.b. They are soft solids at room temperature.c. They give away their 1 valence electron so

their next shell has 8.d. They aren’t quick to react.

When Chlorine (Cl) reacts, it steals an electron. What does this do to the atom?

a. b. c. d.

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a. Cl +1

b. Cl -1

c. Cl +8

d. Cl 0

Noble gases don’t react because

a. b. c. d.

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a. they become positive in the air.b. they become negative in the air.c. their outer shells are already full.d. they are gases.

What is the family of Iron (Fe)

a. b. c. d.

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a. Alkali metalsb. Alkaline Earth metalsc. Rare-earth metalsd. Transitional metals

What is the family of Chlorine (Cl)?

a. b. c. d.

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a. Halogen familyb. Oxygen familyc. Transitional Metalsd. Noble gases

What is the family of Calcium (Ca)?

a. b. c. d.

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a. Transitional metalsb. Alkali metalsc. Alkaline earth metalsd. Rare-earth metals

Is Silicon (Si) a metal, nonmetal, or metalloid?

a. b. c. d.

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a. Metalb. Nonmetalc. Metalloidd. None of the above

What is the family of Phosphorus (P)?

a. b. c. d.

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a. Noble gasesb. Halogensc. Nitrogen familyd. Carbon family

What is the family of Hydrogen (H)?

a. b. c. d.

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a. Alkali metalsb. Noble gasesc. Rare-earthd. Not in a family

What is the most reactive metal?

a. b. c. d.

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a. Fluorine (F)b. Francium (Fr)c. Lithium (Li)d. Uranium (U)

What is the magic number in chemistry?

Why?

With a partner, match what each scientist or theory believed about atoms.

1.Democritus (Greek) A. Atoms of same element are2.Dalton alike3.Thompson B. electrons orbit like planets4.Rutherford C. there must be a nucleus5.Bohr D. 1st to name electrons6.Modern Theory E. electrons in clouds; can’t locate

F. first to name atoms, but thought indivisible

Drawing Atoms1. Symbol 9. Group?2. atomic number 10. Family?3. mass number 11. Solid, liquid, or gas?4. # protons 12. Metal, nonmetal, or metalloid?5. # electrons 13. Which element would it react with?6. # neutrons 14. Why would it react with that element?7. # shells (clouds) 15. Draw an atom of the element.8. # valence electrons