Metals, Nonmetals, Metalloids
What type of metal is Na?
Metal
What subatomic particles belong in the nucleus?
Protons and neutrons
Is water a solid, liquid and gas?
solid
What subatomic particle is the same number as the # electrons?
protons
Which element is found in group 3 and period 5?
Yttrium
What are 3 properties of a metal?
shiny, malleable, ductile, good conductor, can be magnetic, may react with acids
What kind of subatomic particle has a negative charge?
electron
Define a homogeneous mixture
A physical blend of substances fully mixed
If the number of neutrons changes what else would change?
Mass number
Which element is group 2, period 3?
Magnesium
Where are metalloids found on the periodic table?
On the stair-step in between metals and nonmetals
The atomic number is the same as the ______.
number of protons and electrons
What type of substance is chocolate ice cream with whipped cream on top?
Heterogeneous Mixture
Which subatomic particle identifies an element?
proton
How many periods are there and which way do they run?
7 and left to right
Which type of element is a semi-conductor?
Metalloids
What is the center of an atom called? And what is its charge, explain.
Nucleus, positively charged because of protons (+) and neutrons (neutral)
What are the two types of pure substance?
element and compound
How many protons, electrons, and neutrons are in:
Zinc - 65
p = 30
e = 30
n = 35
Is the Lanthanide series and actinide a part of periods 6 & 7 or separate?
they are part of rows 6 & 7
If an element is a dull yellow solid, brittle, or does not conduct electricity, what type of element is it? What actual element could be this unknown be?
nonmetal; sulfur
What is the charge of an atom?
Positive, negative, or neutral
neutral
Salt (NaCl) and Water (H2O) are mixed. Classify each before and after mixing. Explain why
Before: compounds - formulas
After: homogenous mixture if fully blended together
Compare and contrast:
2311X 2312X
Are they different elements or isotopes of the same element?
different elements because different atomic number
2311X - p = 11, e = 11, n = 12 Sodium
2312X - p = 12, e = 12, n = 11 Magnesium
List out and name each group.
1A: Alkali Metals
2A: Alkaline Earth metals
Group B: Transition Metals
3A: Boron Group
4A: Carbon Group
5A: Nitrogen Group
6A: Oxygen Group
7A: Halogens
8A Noble Gases