Atoms
Periodic Table
Properties
Matter
Compounds
100
What do you call the electrons that are located in the outermost electron shell of an element?
valence electrons
100
What can be found on the left side of the periodic table?
metals
100
What are the two types of physical properties?
Qualitative and Quantitative
100
What is a pure substance that is made up of more than one element, chemically combined?
Compound
100
What is the name of the single particle of a compound?
Molecule
200
What are the three subatomic particles, and their charges?
Proton - positive Neutron - neutral Electron - negative
200
The elements in Group 17 are known as _________.
Halogens
200
Which property is described by the statement that aluminum can be bent into various shapes?
Malleability
200
The two main types of matter are pure substances and ___________.
Mixtures
200
How many total atoms are in the following compound?
5 (1 C, 4 F)
300
Which of the subatomic particles are found in the nucleus?
Protons and Neutrons
300
What are the elements in Group 18 called? Why are they considered "nonreactive"?
Noble Gases. Complete shell
300
Which of the following are chemical properties? *a) flammability* *b) ductility* *c) combustion *d) viscosity *e) odor *f) reactivity with oxygen
flammability combustion reactivity with oxygen
300
A substance that is made entirely from one type of atom.
element
300
An ion forms when an atom _____________.
Gains or loses electrons (to become stable)
400
How do you determine the number of neutrons of an element?
Atomic mass - Atomic number/# of protons
400
As you move from left to right within a period across the periodic table, the number of valence electrons of the elements tends to _________.
increase
400
The density of silver is 10 g/mL. If you had a piece of silver with a mass of 450 g, what would the volume of the piece of silver be? Show your full work.
45 mL
400
Orange juice is an example of what type of matter?
Solution
400
What are the two types of compounds?
Ionic and Covalent
500
How many energy levels and valence electrons does an element have if it is in Group 17 and Period 2?
7 valence electrons and 2 levels
500
As you move down a group on the periodic table, the number of valence electrons of the elements tends to _________.
stay the same.
500
Which of the following are chemical changes? *a) dissolving sugar in water *b) boiling water *c) iron rusting *d) cutting paper *e) frying an egg *f) lighting a match
iron rusting frying an egg lighting a match
500
These elements are poor conductors of heat and electricity
non-metals
500
What is the difference between ionic and covalent compounds?
Ionic compounds form when atoms lend or borrow electrons. Covalent compounds form when atoms share electrons by overlapping valence levels. OR Ionic compounds form between a metal and non-metal Covalent form between two or more non-metals.
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