Chemistry Ch.7 Flashcards
What are some differences in group 1A and group 2A metals?
They are harder, less reactive, harder
How does a deuterium differ from a normal hydrogen atom?
It has a neutron
Why do elements within a group have similar chemical properties?
They have the same number of valence electrons
What characteristics makes hey metal strongly attracted to a magnetic field
Many unpaired electrons in the D sub level
What happens to hydrogen in a reaction with a nonmetal
It loses its electron and becomes a positive ion
Why is magnesium generally less reactive then sodium
Magnesium has to valence electrons,sodium has one it’s easier to lose one than 2
Elements in neighboring groups have similar properties this is called a blank relationship
Diagonal
What are some uses of sodium chloride
Table salt also known as a preservative
What is heavywater
water that contains deuterium, I hydrogen isotope that has a neuron
Why are halogens so reactive
Only needs one valence electron
Potassium is more reactive than sodium because
They both have one valence electron
What makes groups said hey and eight exit different chemically
Group 7 needs one valence electron, they are very reactive. Group 8A has valence shell meaning it is not reactive
What is diamagnetic metal
Non magnetic
Explained my magnesium and calcium are easily substituted for each other aim compounds
They are in the same group and are very unlock
What is a common use for aluminum sulfate
It is used in anti-perspirant’s (deodorant)
Which group of metals always take to charge a plus to any reaction
Alkalaline metals
What is the most reactive element on the periodic table and why?
Francium, largest radius with one valence electron
What is O zone? Where is it found? What is its importance to humans
O3, found in Earth’s atmosphere, blocks UV rays
Lead, normally, and found the paint, is no longer used for the purpose. Why?
Very toxic
How are metals commonly separated from one another
Hot temperatures, solutions, electricity
What characteristics are caused by many unpaired electrons in a metal
Hard, brittle, High melting point, Attracted to a magnet
What is a amorphous solid
No particular arrangement of it’s atoms
What does it mean if the metal is strategically critical, which mental spit in this category
We need them for environmental and military purpose, cobalt to platinum
What is common use for boric acid
Disinfectant, insect killer, Eye was solution
