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Chapter 14 Section 1 And 2
Test Description: Vocabulary
Instructions: Answer all questions to get your test result.
1) A particle IN the atom's nucleus with a neutral (no) charge
A
neutron
B
proton
C
electron cloud
2) A negatively charged particle found in the 'electron cloud'
A
nucleus
B
electron
C
atom
3) Matter that is made of only one kind of atom. It is pure.
A
alpha particle
B
element
C
anode
4) When an atom is undergoing 'radioactive decay', it may end up changing it's number of protons and become a whole new substance. This is called.....
A
transmutation
B
isotope
C
cathode
5) The smallest part of matter that you can have. Th building block of all matter.
A
atom
B
nucleus
C
isotope
6) This is how we identify the atom. The atom's 'social security number'. The number of protons in an atom.
A
beta particle
B
atomic number
C
half-life
7) The 'positive' end of an electrode (metal that conducts)
A
proton
B
electron
C
anode
8) The particle IN the nucleus with a positive charge. It gives the atom its identity.
A
electron cloud
B
isotope
C
proton
9) This is where electrons are found outside the nucleus.
A
electron cloud
B
electron box
C
nucleus
10) This are made of 2 protons and 2 neutrons
A
neutrons
B
alpha particles
C
atoms
11) The time it takes for half of a chunk of matter to give of its particles of radioactivity.
A
particle-life
B
whole-life
C
half-life
12) 'An atom with a haircut'. The atom has changed its number of neutrons but NOT the number of protons.
A
isotope
B
radioactive decay
C
beta particle
13) The total mass of the atom (protons + neutrons). Electrons do NOT count because they are too small!i
A
neutron weight
B
atomic mass
C
alpha particle
*select an answer for all questions
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