write answers on sheet of paper – 13, 16, 17, 20

Write answers on sheet of paper – 13, 16, 17, 20

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Choice1 Choice 2 Choice 3 Choice 4

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Row 1, Col 1

CSymbols are assigned to each of the elements.

Some are the first letters of the element, some are not.The first letter is always capitalized,

the second is lower cased.

What is the symbol for carbon?

1,2

11 protonsProtons are the same number as the atomic number.

The number of protons is equal to the amount of electrons.

Protons are positive.Electrons are negative.

How many protons are in an atom of sodium?

1,3

Zero NeutronsNeutrons are in the nucleus with the protons. Together they equal the majority of the mass.

How many neutrons are there in Hydrogen?

1,4

17 ElectronsElectrons are negative.

They are the same number as protons.Electrons have no mass and

circle the outside of the nucleus.

How many electrons are in an atom of Cl?

2,1

H2OA formula is a chemical compound.

It is made of 2 or more different elements

What is the formula for water?

2,2

Na -1H - 1C - 1 O - 3

The number, the subscript indicates the ratio of atoms.

How many elements are in baking soda, NaHCO3?

2,3

Electrons are negative.Electrons are attracted to the

protons which are positive. Electrons “buzz” around the

nucleus at different levels.

If protons are positive, neutrons are neutral, electrons are --?

2,4

Electron CloudThe electrons “buzzing”

around the nucleus like a cloud.

Electrons have no definite path,But stay a definite distance

from the nucleus

If protons and neutrons are in the nucleus,

electrons are in the ------?

3,1

NucleusThe nucleus is where most of the mass of an atom is.

It is located in the middle of the atom.

Where are the protons and neutrons in the atom?

3,2

2 or more elementschemically combined

A compound is different from an elementbecause it is 2 different elements combined.An element is the same all the way through.

What is a compound?

3,3

14 NeutronsAtomic mass: 28Atomic number - 14Neutrons 14

If the atomic number is 14, and the mass is 28,

the number of neutrons is -----?

3,4

Valence ElectronsElectrons are arranged in energy levels.

The number of electrons in the outer levelindicates which group or family the

element belongs in. It also indicates whatother elements it might bond with.

What are the electrons called in the outermost shell called?

4,1

IonAtoms can lose electrons to reach equilibrium.

Atoms can also lose neutrons, but never protons.

What is an atom called that has more electrons?

4,2

IsotopeAn isotope is an atom that loses neutrons.

What is an atom called that has more neutrons?

4,3

PeriodsPeriods are horizontal

and represents the numberof energy levels of the elements in that row.

What do the rows on the periodic table represent?

4,4

Groups or Families - On the Periodic Table - Groups are vertical and represent the number of

valence electrons in the outerenergy levels. The elements

in that column have the samephysical properties –

like a family.

What do the columns on the periodic table represent?

5,1

2, 8, 8, 18, 32Electrons have a definite number

in each energy level.

How many electrons are in each energy level?

5,2

What is the element tile for Carbon?

6

CC12

Atomic number

Atomic mass

Atomic symbol

5,3

Must have 8 electrons to be stable.

What is the rule when atoms form bonds with other atoms so their outer shell is stable?

5,4

Metals, Metalloids, Nonmetals

What order are the properties in on the Periodic Table?

Left Staircase RightBased on their physical propeties

Metals/Nonmetals – oppositesMetalloids –take on characteristics of both