Chemistry (Atoms and Elements) Unit 2 Flashcards
Where are metals located?
The left side of the staircase of the periodic table.
Where are non metals located?
On the right side of the staircase on periodic table.
Where are metalliods located?
On the staircase on the periodic table.
What are the 7 properties of a metal?
lustre silver or gray malleable ductile solid conducts heat conducts electricity
What are the 4 properties of a non metal?
full
brittle
insulator
solid or gas
what are metalloids?
metalloids demonstrate some properties of metals and some properties of non metals
what are the three states of matter
solid
liquid
gas
what determines how reactive an atom will be?
the number of electrons in the outer orbit
the less number of electrons needed to be gained or lost in order to have a full outer shell, the greater the reactivity
what families are most reactive
the alkali metals and the halogen family
why are the alkali metals and halogen family most reactive?
They’re the most reactive because they. only have one electron to gain or lose in order to have a full outer shell
what family is least reactive?
noble gases
why are the noble gases the least reactive family?
because the outer shell is full
metals tend to ________ while non metals tend to ________ electrons
lose
gain
distinguish between: element and compound
Elements: an element is made up of one type of atom.
Compounds: a compound is made up of two or more types of atoms.
distinguish between: atom and molecule
Atom: an atom is the smallest particle of an element
Molecule: a molecule is the smallest particle of a compound
what is a diatomic molecule? list the 7 diatomic molecules
a diatomic molecule is an element that had molecules as long as the atoms in the molecules are the same ex. O2 nitrogen oxygen fluorine chlorine bromine iodine hydrogen
what are the 3 ways to obtain a full outer electron shell?
gain
lose
share
What are the number of atoms for each element of this compound?
2C11H22O12
Carbon-22
Hydrogen-44
Oxygen- 24
what are the 8 physical properties?
state hardness malleability ductility density viscosity solubility melting and boiling point
what are the 5 chemical properties?
combustion oxygen hydration corrosion heating
a block of aluminum occupies a volume of 15mL and weighs 40.5g. What is it’s density?
M/V=40.5/15=2.7g/mL3
answer=2.7g/mL3
define: soluable
able to be dissolved
define: insoluable
not able to be dissolved in a liquid
define: solvent
the liquid in a solution
define: solute
the component dissolved into the solvent
state the characteristics of a chemical changed
change in temperature change in colour noticeable odour light or heat not reversible
state the characteristics of a physical change
change in state
reversible
define:percipitate
a solid formed after you combine two elements
define:hydrocarbon
material made from hydrogen and carbon
