as you move down group 1 what patterns do you see?
elements become more reactive, higher density, lower melting point and boiling point.
1 of 33
where are electrons found?
in the outer shells or orbiting around the nucleus.
2 of 33
what charge does the nucleus have
positive
3 of 33
what color flame does lithium burn with?
red.
4 of 33
what is the term for chemicals created during a reaction?
products.
5 of 33
what is the term for the chemicals that go into a reaction?
reactants.
6 of 33
what defines the element name of an atom?
the number of protons it has?
7 of 33
what charge does an electron carry?
they have a negative charge.
8 of 33
name 3 scientist who were involved in the development of the periodic table?
dobereiner,newland,mendeleev
9 of 33
what gas is created when group 1 metals react with water?
hydrogen.
10 of 33
how many elements were in dobereiners groups?
three
11 of 33
what did newland casll his groups?
the octaves
12 of 33
why was mendeleevs table of elements different to previous efforts?
he left gaps and predicted new elements.
13 of 33
what are the vertical colums in the periodic table called?
groups
14 of 33
what are the horizontal rows in the periodic table called?
periods
15 of 33
how many elements are in the periodic table?
about 100 [118 to be exact]
16 of 33
what is the relative atomic mass?
its the total number of protons and newtons.
17 of 33
what do elements in the same group have in common?
they have the same number of electrons in their outer shell.
18 of 33
why dont group 0 react with anything?
there shell is full so the dont have any to lose.
19 of 33
why are the elements in group 1 so reactive?
they only have 1 electron in their outer shell and want to lose it.
20 of 33
what kind of ions do group 1 metals make?
positive [e.g. Na+]
21 of 33
what are the group 1 metals also known as?
alkali metals
22 of 33
what are group 7 elements known as?
the halogens
23 of 33
how is the periodic table organized and aranged?
they are organized by their mass and atomic number as well as in groups and periods
24 of 33
which 2 sub-atomic particles are found in the nucleus?
protons and newtrons.
25 of 33
where is the nucleus of an atom found?
in the middle.
26 of 33
why is group 0 given its name?
it is called group 0 because the outer shell is full with electrons.
27 of 33
why are they put into groups?
they are arranged in groups depending on how many electrons are on their outer shell. [e.g. 1 electron means group 1 but 8 electrons means group 0 which also can be called group 8]
28 of 33
how are electrons arranged?
they are arranged in shells or orbits.
29 of 33
what does the word ATOM mean?
it means WHICH CANT BE CUT.
30 of 33
true or false..... an atom has the same number of protons, neutrons and electrons.
true.
31 of 33
what is the outside of an Atom made of?
the outside of an atom is made of electrons.
32 of 33
what is the nucleus of an Atom made of?
the nucleus of an atom is made of protons and newtrons.
33 of 33
Other cards in this set
Card 2
Front
where are electrons found?
Back
in the outer shells or orbiting around the nucleus.
Card 3
Front
what charge does the nucleus have
Back
Card 4
Front
what color flame does lithium burn with?
Back
Card 5
Front
what is the term for chemicals created during a reaction?
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