periodic table Flashcards

1
Q

What is the atomic number of Fe?

A

26

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2
Q

Elements that appear dull and are liquid at room temperature are called

A

non-metals

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3
Q

What element is Cu?

A

copper

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4
Q

Dmitri Mendeleev first organized the Periodic Table by increasing

A

atomic mass

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5
Q

Another name for each column in the Periodic Table?

A

group or family

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6
Q

Electrons have a __________ charge.

A

negative

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7
Q

What group contains the most reactive metals?

A

group 1

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8
Q

he Periodic Table is divided into metals, non-metals, and…..

A

metalloids

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9
Q

Who first hypothesized the idea of an atom around 440 BC?

A

Democritus

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10
Q

Shiny, solid elements are typically ____________.

A

metals

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11
Q

What is the element symbol of Sodium?

A

na

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12
Q

What is the element name of Fe?

A

iron

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13
Q

Group 18 is also known as the ________________

A

noble gases

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14
Q

The modern Periodic Table is organized by increasing ________ .

A

atomic number

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15
Q

The atomic number represents the number of what?

A

protons

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16
Q

The zig-zag line of the Periodic Table divides the metals from the ______________.

A

non-metals

17
Q

What name is given for an atom that has the same number of protons and a different number of neutrons?

A

isotopes

18
Q

What does the bonding betweeen two atoms?

A

valence electron

19
Q

How many neutrons does Carbon have?

A

6

20
Q

How many electrons does Helium have?

A

2

21
Q

element

A

a pure substance that cannot be broken down chemicallly into simpler substances

22
Q

pure substance

A

made up of only one type of particle;includes elements and compounds