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When looking at the periodic table how do the physical and the chemical properties change?
Wiki User
∙ 12y ago
Well all of the metals except Mercury are solids, and they are on the left side of the table. Along the stair-steps are the metalloids, which have metallic properties and nonmetallic properties. So those are solids. Nonmetals are solids, liquids and gases at STP (standard temperature and pressure). The right side is mostly gases though, the only solids at STP across the stair step are sulfur and iodine, the rest are gases and solids. in terms of melting and boiling points, they decrease across the table, because gases have very low melting and boiling points and they are more prominent in the right side of the table. Other properties such as malleability and ductility decrease across the table. In terms of Chemical properties, they change according to number of valence electrons... and I'm not sure which ones you want me to mention... In terms of chemical reactivity, groups one and two are the most likely to react, and so is group 17, the rest really depends on the number of valence electrons. So if an element say in the transition metals category, the fewer amount of valence electrons, the better. for nonmetals, they're all pretty reactive if they have like 6 or 7 valence electrons. But noble gases barely EVER react...
Wiki User
∙ 12y ago
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Can the chemical properties of a substance be observed without changing the substance?
physical properties
Which property of matter can easily be determined by looking at the periodic table?
Various chemical properties can be determined. It is done by estimation from position of element.
How can you predict the placement of an unknown element on a periodic table based on physical an chemical properties?
You look at trends. An element is likely to have properties somewhere between the element above it and the element below it; if there's nothing below it (or above it), then you can follow the general trend up (or down) that column and extrapolate.
Is there a way to decide whether a chemical is a gas or liquid just by looking at its physical properties?
If the property can be observed without changing the chemical composition of the substance, then it is a physical property. If the property can be observed only through a chemical reaction, then it is a chemical property.
Can you tell the chemical properties of a can by looking at a picture whether it is a tin can aluminum can or a crushed can?
No. In order to tell what the chemical properties of the crushed can would be, you would have to have it in person in order to analyze it and come up with the chemical properties.
Arsenic is it physical or chemical property?
Arsenic has physical properties as it is a crystalline or metal-looking solid.
Can the chemical properties of a substance be observed without changing the substance?
physical properties
When looking at a periodic table of elements what do you know by knowing in which column an element appears?
Chemical elements in the same group have similar chemical properties.
Which property of matter can easily be determined by looking at the periodic table?
Various chemical properties can be determined. It is done by estimation from position of element.
How can you predict the placement of an unknown element on a periodic table based on physical an chemical properties?
You look at trends. An element is likely to have properties somewhere between the element above it and the element below it; if there's nothing below it (or above it), then you can follow the general trend up (or down) that column and extrapolate.
What are the physical properties of molybdenum?
grey metallic looking
Is there a way to decide whether a chemical is a gas or liquid just by looking at its physical properties?
If the property can be observed without changing the chemical composition of the substance, then it is a physical property. If the property can be observed only through a chemical reaction, then it is a chemical property.
Can you tell the chemical properties of a can by looking at a picture whether it is a tin can aluminum can or a crushed can?
No. In order to tell what the chemical properties of the crushed can would be, you would have to have it in person in order to analyze it and come up with the chemical properties.
What tools can be used to observe and measure physical properties?
that truly depends on which physical property(ies) you are looking for
Why are the hydrides of mendeleevs group 1 and 7 placed in separate groups?
Mendeleev left gaps in his table to place elements not known at the time. By looking at the chemical properties and physical properties of the elements next to a gap, he could also predict the properties of these undiscovered elements. For example, Mendeleev predicted the existence of 'eka-silicon', which would fit into a gap next to silicon. The element germanium was discovered later. Its properties were found to be similar to the predicted ones and confirmed Mendeleev's periodic table.
Is gasoline a chemical or physical property?
Colourless is a property, or word to describe matter, however the "gas" would be something you're describing. However, if a reaction is omitting a colourless gas, it could be considered a physical property of the reaction.
Is toxic a physical or chemical property?
Toxicity is a chemical property. You can not see the toxicity just by looking at it.
