Periodic table + atoms Flashcards
Which particle is positive
Protons
Which particle is negative
Electrons
Where are the electrons located
Outside the nucleus in shells
Where are the protons located
In the nucleus
Alkali metals characteristics (2)
Soft metals
reacts vigorously with water
Alkali earth metals characteristics (1)
Found in the crust of the earth
Halogens characteristics (3)
Very reactive
Non-metals
Used as disinfectants
Noble gases characteristics (1)
Very stable does not react
How many valance electrons does group 1 have
1 valance electron
How many valance electrons does group 2 have
2 valance electrons
How many valance electrons does group 13 have
3
How many valance electrons does group 14 have
4
How many valance electrons does group 15 have
5
How many valance electrons does group 16 have
6
How many valance electrons does group 17 have
7
What charge do metals become during a chemical reaction
They become positive ions during a chemical reaction. (they lose electrons)
What charge do non metals become during a chemical reaction
They become negative ions (they gain electrons)
What is the law of conservation of mass
Matter can never be created nor destroyed; only transformed
What are the 2 signs of combustion
Heat and light
What are the 3 types of combustion
1) rapid (ex. logs burning)
2)spontaneous (ex. straw burning without adding any heat)
3) slow (ex. corrosion)
What are the 3 components of the fire triangle
1) oxidizer
2) fuel
3) heat
