The Periodic Table of Elements Flashcards

1
Q

What are 5 properties of metals?

A

Metals are lusterous, are good conductors, are malleable, are ductile and are solid at room temperature except for Mercury.

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2
Q

What are 4 properties of semi-metals?

A

Semi-metals can be dull or shiny, are decent conductors, are not ductile and are not malleable

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3
Q

What are 5 properties of non-metals?

A

Non-metals are dull, are insulators, are not malleable, are not ductile and are gases and liquids at room temperature.

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4
Q

All matter is made up of small particles called…

A

atoms/ elements

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5
Q

An element is made up of…

A

the same kind of atom

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6
Q

An element is a substance that cannot be broken down into…by…reactions

A

smaller particles/ simpler substances…chemical

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7
Q

All known elements are listed on the…

A

periodic table of elements

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8
Q

Atoms of one element…from atoms of all the other elements.

A

differ

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9
Q

What are atoms made up of?

A

positive protons, negative electrons and neutral neutrons

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10
Q

What is the central region of the atom called and what is it made up of?

A

The nucleus is made up of protons and neutrons.

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11
Q

Why are atoms neutral?

A

Atoms have the same number of positively charged protons and negatively charged electrons.

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12
Q

What are examples of pure substances?

A

Elements and Compounds

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13
Q

What are diatomic molecules?

A

Diatomic molecules consist of two atoms of the same element.

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14
Q

What are the 8 diatomic elements?

A

Hydrogen, Oxygen, Nitrogen, Bromine, Iodine, Astatine, Chlorine and Fluorine.

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15
Q

What is a compound?

A

A compound is a material that consists of different elements chemically bonded.

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16
Q

The atoms in a compound are always bound in a…

A

chemical reaction

17
Q

What is a chemical bond?

A

A chemical bond is an attraction between atoms that enables the formation of chemical compounds.

18
Q

How can compounds be broken down or chemically bonded into other compounds or their original elements?

A

By heat or electrolysis

19
Q

How can mixtures be separated?

A

Through physical means such as hand-sorting, magnetism, distillation, evaporation and filtration.

20
Q

What is a green gas?

A

Chlorine

21
Q

What is a yellow solid?

A

Sulfur

22
Q

What is coal made up of?

A

Carbon

23
Q

What element has similar chemical properties to potassium?

A

Sodium

24
Q

What element forms a precipitate when reacting with silver nitrate?

A

Fluorine

25
Q

What gas makes up 75% of the earth’s atmosphere?

A

Nitrogen