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Atoms
Test Description: Atoms
Instructions: Answer all questions to get your test result.
1) How do we define chemistry?
A
Study of mixtures
B
Study of matter
C
Study of molecules
D
Study of mechanics
2) What do we call the smallest piece of an element that can be defined as that element?
A
atom
B
chemistry
C
nucleus
D
molecule
3) What do we call the center section of an atom
A
protons
B
electrons
C
nucleus
D
neutrons
4) Which as a positive charge?
A
neutron
B
electron
C
protron
5) What do we call the cloud-like space surrounding the nucleus of an atom?
A
proton
B
electron
C
nuclear outside
D
shell
6) An atom's ATOMIC NUMBER is the number of _________ it has in the nucleus.
A
neutrons
B
electrons
C
protons
7) Who was the first scientist to successfully organize the elements into a table?
A
Tommy Thomlison
B
Niels Bohr
C
Bob
D
Albert Einstein
8) What machine can smash an atom?
A
atomic mapper
B
elemental spliter
C
particle accelerator
D
atomic smasher
9) What is the Chemical Symbol for Chlorine?
A
Ch
B
C
C
Chlrn
D
Cl
10) The horizontal rows of periodic table are called...
A
semimetals
B
periods
C
groups
D
categories
11) Vertical columns of the periodic table are called ____ and includes elements with the same number of electrons in their outer shells.
A
groups
B
periods
C
categories
12) Atoms may join with other atoms to form units called _____.
A
nucleuses
B
protons
C
elemental atoms
D
molecules
13) When atoms join with different types of atoms and have a reactions we call this a _____ change.
A
loose change
B
atomic change
C
physical change
D
chemical change
14) When chemicals join to form a new substance we call this reaction a _____ reaction.
A
alternative
B
compoundic
C
synthesis
D
decomposition
15) When chemical reactions break down a complex compound into two or more simpler compounds we call this kind of chemical reaction ______.
A
not cool
B
cool
C
decomposition
D
synthesis
16) When the atoms outermost shell is completely filled withe electrons, we call this....
A
closed
B
too heavy
C
full
D
atomically full
17) An atom that has gained or lost electrons is called an...
A
shell
B
ion
C
nucleus
D
molecule
18) An ionic bond is when...
A
old and new molecules bond to form a new substance
B
old and old molecules bond to form a decomposition
C
positive and negative ions combine to form a new compound
D
negative and negative ions combine to form a new compound
19) Stronger acids can...
A
cool quickly
B
dissolve in water
C
burn your skin
D
freeze into solid state
20) the pH scale is numbered from 0 to ___ and measures the acids (or bases) in a concentration.
A
10
B
14
C
16
D
12
*select an answer for all questions
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