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Worksheets1st 9 Weeks Chemistry Checkpoint 2 Review
Total questions: 11
Worksheet time: 11mins
Which statement describes one of the main differences between a physical and a chemical
change?
A chemical change involves reactants and products, whereas a physical change involves only
reactants.
A physical change is a change of state, whereas in a chemical change the substance keeps
the same form.
A physical change brings about a different form of the same substance, whereas a chemical
change forms a different substance.
A chemical change caused by adding or removing heat energy can usually be reversed,
whereas a physical change can generally not be reversed.
Which two elements have chemical properties that are most similar?
K and Ca
C and N
Li and Na
Cl and Ar
A mixture of iron and sulfur can be separated by attracting the iron particles with a magnet. If
the iron and sulfur mixture is heated strongly, iron (II) sulfide forms, which is no longer magnetic
and cannot be separated by physical methods. What is iron (II) sulfide?
homogenous mixture
compound
element
heterogeneous mixture
Which type of bond is formed when two atoms share a pair of electrons?
symbiotic
covalent
ionic
metallic
Which of the properties below apply to the Noble Gas family of elements? (select all that apply)
react with metals and other elements
rarely react with metals and other elements
full outermost valence shell
incomplete outermost valence shell
When an atom has equal number of protons and electrons it is referred to as being...?
electrically charged
electrically negative
electrically positive
electrically neutral
Electrical conductivity, a property of metals _____________ depend on the arrangement or the bonding of the metal atoms.
DOES
DOES NOT
The Group 17 element with the highest electronegativity is —
chlorine
iodine
bromine
fluorine
Which electron-dot formula represents CaO?
A
B
C
D
1s2 2s2 2p5 is the electron configuration of what element?
O
F
Ne
Na
Ionic bonds are formed between _______ and _______. They involve a __________ of electrons from Metals to Nonmetals. In the process they create _______ .
nonmetals, nonmetals, sharing, neutral particles
metals, metals, "sea", metals
metals, nonmetals, transfer, ions
james, bond, 007, spy
