Science Flashcards
(18 cards)
What is Silicon at room temperature?
Solid
What is the symbol of Silicon?
Si
Is Silicon synthetic or natually made?
Naturally Made
Identify the Atomic Mass of Silicon.
28.0855
True or False: A metal is often shiny and a poor conductor of electricity?
False; metal is a good conductor of electricity.
True or False: Silicon is in sand, glass, electronic devices, and metal tubing?
True
True or False: Mendeleev was unable to see future elements in the table.
False; there were spaces missing so he knew there was.
In what state are most non-metals at in room temperature?
Gas
Approximately how many elements are metal on the periodic table?
3/4
What does periodic mean in the periodic table?
It has repeating cycles
What is the most common element in the universe?
Hydrogen
What general statement does not apply to metals?
Most metals are brittle.
Which of the following is not on an element key?
The Density
At room teperature most metals are what?
Solid
All metals do what?
Conduct heat and electricity
Which elements are locted betweeen the metals and the non-metals?
The metalloids
A single horizontal portion of the periodic table is called what?
Period.
What is not true about metal?
They don’t conduct heat.
