Science Flashcards
1
Q
What do endothermic reactions require?
A
The absortion of heat.
2
Q
What are exothermic reactions accompanied by?
A
The release of heat.
3
Q
Where are transition metals found on the periodic table?
A
The periodic table group from 3 to 12
4
Q
What are the common elements of metalloids (list only 1)?
A
Boron, silicon, germanium, arsenic, antimony and tellurium
5
Q
What is the 2n^2 rule used for?
A
To calculate the number of shells in an atom
6
Q
What is an example of an endothermic reaction?
A
E.g., our body warming up on a cold day when the heater is running.
7
Q
What is an example of an exothermic reaction?
A
E.g., the heater’s fan releasing heat for a closed room.
