Question

The table lists properties of a few known elements, but the states of matter and melting points are missing. Look up the elements in this periodic table. Click an element in the table to reveal its properties. Then add the states of matter (at 20°C) and melting points you find to the table.
K
State of matter:
Melting point: °C
Conductivity: good
Solubility (H2O): reacts rapidly I
State of matter:
Melting point: °C
Conductivity: very poor
Solubility (H2O): negligible Au
State of matter:
Melting point: °C
Conductivity: excellent
Solubility (H2O): none
Ge
State of matter:
Melting point: °C
Conductivity: fair
Solubility (H2O): none Ba
State of matter:
Melting point: °C
Conductivity: good
Solubility (H2O): reacts strongly Ar
State of matter:
Melting point: °C
Conductivity: none
Solubility (H2O): negligible
Cl
State of matter:
Melting point: °C
Conductivity: poor
Solubility (H2O): slight Rb
State of matter:
Melting point: °C
Conductivity: good
Solubility (H2O): reacts violently Ag
State of matter:
Melting point: °C
Conductivity: excellent
Solubility (H2O): none
Ca
State of matter:
Melting point: °C
Conductivity: good
Solubility (H2O): reacts Si
State of matter:
Melting point: °C
Conductivity: intermediate
Solubility (H2O): none Xe
State of matter:
Melting point: °C
Conductivity: very poor
Solubility (H2O):

Answer 1

The properties of the given elements are as follows:

Potassium, K;

• State of matter: Solid
• Melting point: 63.5 °C
• Conductivity: Good
• Solubility (H2O): reacts rapidly with water

Iodine, I;

• State of matter: solid
• Melting point: 113.5 °C
• Conductivity: very poor
• Solubility (H2O): negligible

Gold, Au;

• State of matter: solid
• Melting point: 1064 °C
• Conductivity: excellent
• Solubility (H2O): none

Germanium, Ge;

• State of matter: solid
• Melting point: 938.2 °C
• Conductivity: fair
• Solubility (H2O): none

Barium, Ba;

• State of matter: solid
• Melting point: 727 °C
• Conductivity: good
• Solubility (H2O): reacts strongly

Argon, Ar;

• State of matter: gas
• Melting point: -189.4 °C
• Conductivity: none
• Solubility (H2O): negligible

Chlorine Cl;

• State of matter: gas
• Melting point: -101.5 °C
• Conductivity: poor
• Solubility (H2O): slight

Rubidium, Rb;

• State of matter: solid
• Melting point: 39.48 °C
• Conductivity: good
• Solubility (H2O): reacts violently

Silver, Ag;

• State of matter: solid
• Melting point: 961.8 °C
• Conductivity: excellent
• Solubility (H2O): none

Calcium, Ca;

• State of matter: solid
• Melting point: 842 °C
• Conductivity: good
• Solubility (H2O): reacts

Silicon, Si;

• State of matter: solid
• Melting point: 1,410 °C
• Conductivity: intermediate
• Solubility (H2O): none

Xenon, Xe;

• State of matter: gas
• Melting point: -111.8 °C
• Conductivity: very poor
• Solubility (H2O): none

What are elements?

Elements are pure substances which are composed of similar atoms.

Elements are defined as substances which cannot be split into simpler substances by an ordinary chemical process.

Elements have different physical and chemical properties and can be classified into:

• metals
• semi-metals
• non-metals

In conclusion, the physical and chemical properties of the elements vary from metals to non-metals.

Learn more about elements at: brainly.com/question/6258301

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