Elements Flashcards
(51 cards)
What is an Element
When all the atoms are the exact same
Are Metals found on the right or left hand side of the periodic table
LEFT
Are there more non-metals or metals?
Metals
Sonorous
They make a pleasing sound when struck
Ductile
They can be pulled out into a wire
Dense
Heavy for their size (but there are exceptions)
Conductors of heat
For the same reason, they can conduct electricity
Describe the physical appearance of most metals
Shiny solid at room temperature
Resists melting when heated
Conducts electricity when solid
Do metals conduct electricity when solid
YES
Do metals conduct heat well
YES
Do metals have a high or low melting point?
HIGH
Brittle
Hard but can break really easily
Malleable
Made into a different shape
Soft
Not firm or hard to touch
Why is copper a unusual metal
It is not shiny like most metals
What is unusual about bromine and mercury
They are a liquid at room temperature
What is unusual about graphite?
It can conduct electricity even though it is not a metal
What is unusual about silicone?
It looks like a metal
What is unusual about lead?
It melts at a low temperature
What does it mean if an element has allotropes?
One or more forms of a chemical element that can exist in the same physical state
Describe how diamond and graphite are different from each other in terms of their properties
Diamond does not conduct electricity because it has no charged particles that are free to move
Describe how to produce magnesium oxide from magnesium
If an element burns in air, it reacts with OXYGEN to form a COMPOUND of the ELEMENT and OXYGEN which is called a OXIDE
Solutions with a pH below 7 are
Acidic
Solutions with a pH of 7 are
Neutral
