TEST
1)
The number of protons is the A)isotope
# B)mass # C)atomic #
2)
Has a + charge A)proton B)neutron
C)electron D)positron
3)
A combination of 2 or more elements A)
atom B)compound C)pure
4)
A solution is best described as being a(n) A)heterogeneous B)mixture
C)colloid
5)
The fastest particle A)proton B)neutron
C)electron
6)
This particle is what makes bonds form
(same choices as #5)
7)
If atoms share electrons it’s a(n) ____ bond
A)ionic B)covalent
8)
In this formula, C6H12O6
there are __ atoms of Carbon. A)6 B)12
C)0
9)
Dirt being swished around in water will settle out. This temporary mixture is a(n)
A)colloid B)solution C)suspension D)homgeneous
10)
A reaction where the reactants are broken down. A)decomposition
B)synthesis C)replacement
11)
Which type of reaction is this?
A)decomposition B)replacement C)synthesis
12)
If you were stupid and tasted an unknown acid, you may notice it is…
A)bitter B)sour
13)
Which of these is a base? A)HCl B)HNO3
C)NaOH
14)
If mass=20 and protons=9, then the atomic number is…
A)20 B)9
C)11 D)0
15)
If you put an egg into vinegar and oil, the two things will stay mixed!
The
egg is called a(n) A)suspender B)emulsifier C)divider D)solution
16)
Which atom would like to gain an electron?
A)Na B)Cl C)Fe
D)Ne
17)
Which atom wont react with anything? A)Na B)Cl
C)Fe D)Ne
18)
A dilute solution is
a)
a
weak solution
b)
a
strong solution
c)
a
neutral solution
19)
The attractive force holding two atoms together
a)
electron
b)
chemical
bond
c)
repellant
forces
20)
States that matter can’t created or destroyed
a)
chemical
equation
b)
law
of conservation of mass
c)
periodic
table
21)
A newly formed substance is a
a)
reactions
b)
reactant
c)
product
22)
Breakdown of a compound into two or more simpler substances
a)
synthesis
reaction
b)
decomposition
reaction
c)
antiseptic
reaction
23)
When a free element replaces another element in a compound it is an
a)
replacement
reaction
b)
synthesis
reaction
c)
decomposition
reaction
24)
What do bonds depend on?
a)
the
outer electrons in an atom
b)
periodic
table
c)
element
compound
25)
What is the atomic number?
a) the numbers of protons in an
atom
b) number of neutrons in an
atom
c) number of electrons in an
atom
d) all of the above
26)
C12H22O11 , how many atoms are in sugar
altogether?
a)
37
b)
12
c)
45
27)
A colloid of one liquid and another liquid is an
a)
base
b)
ion
c)
electron
d)
emulsion
28)
In a chemical reaction, the newly formed substances are called
a)
reactions
b)
products
c)
spontaneous
reactions
29)
The breakdown of a compound into two or more simpler substances is
a)
decomposition
reaction
b)
synthesis
reaction
c)
double
reaction
30)
When two atoms share a pair of electrons they are held together by a force
called what?
a)
chemical
bond
b)
covalent
c)
molecule
d)
diatomic
31)
What is the symbol for water?
a)
H3O
b)
H2O
c)
W2O
d)
2O
32)
Why do electrons and protons attract?
a)
opposite
charge
b)
positive
and neutral charges
c)
they
don’t
33)
What is an ion?
a)
positive
charged atom
b)
negative
charged atom
c)
either
a or b
34)
Two or more atoms joined by a covalent bond is called?
a)
molecule
b)
particle
c)
ion
35)
Acids__________
a)
donate
protons
b)
take
protons
c)
neither
36)
When an acid and a base form a salt and water it is called
a)
salt
water maker
b)
neutralization
c)
reaction
37)
What is a solution with a large amount of solute?
a)
concentrate
b)
dilute
c)
saturated
38)
Which reaction gives off heat?
a)
endothermic
b)
synthesis
c)
exothermic
d)
catalyst
39)
Is H3O a hydroxide ion or a hydronium ?
circle one.
40)
When acids are mixed with bases, you have a(n) ____ reaction.
a)replacement
b)decomposition
c)neutralization
d)synthesis