ATOMS
The central portion of an atom is known as the _____
nucleus
The number of electrons found in an atom can be found on the periodic table of elements. This value is known as the
atomic number
Which statement below is correct?
A. Elements whose atoms have their outermost layer of protons completely filled are most stable
B. Elements which have their nucleus filled with electrons are the most stable
C. Elements which have their outermost layer of electrons partially filled are most stable
D. Elements which have their outermost layer of electrons completely filled are the most stable elements.
D.
When atoms transfer electrons from one to another in order to form greater stability, a(n) ___________ bond is said to have formed
ionic
Which is NOT considered a feature common to all living things?
A. growth and develop
B. requires source of food or energy
C. Move
D. Require oxygen for survival
E. Reproduce
D. bacteria and microbes do not require oxygen to live
The arrangement of the _____ tells us about the behavior or reactivity of an elements atoms
electrons
Which element would most likely be the least reactive
A. Hydrogen
B. Carbon
C. Sodium
D. Neon
D. Neon
Elements which are unstable are able to gain stability by forming _____ with other unstable elements.
bonds
double covalent bond
All things, whether living or not, are composed of tiny bits of matter known as
atoms
The atomic theory says that atoms are composed of yet smaller subatomic particles. The subatomic particles found in the nucleus of the atom are the
protons and neutrons
What is the element symbol for hydrogen?
H
Four elements which are vitally important to living things are
carbon, hydrogen, oxygen, and nitrogen
carbon atoms desire to form ____bonds while oxygen atoms desire to form _____ bonds to gain greater stability
4, 2
What does bios mean?
life
There should be _____ electrons in the first layer/orbital of an atomic structure and if needed, ________ electrons in the outer shells to make an element stable
2, 8
What is the element symbol for oxygen?
O
The family of elements whose atoms have their outer layers of electrons completely filled making them very very stable is the _____ family
Hydrogen Atoms desire to form how many bonds?
1
What does ology mean?
Electrons are arranged in ______ around the nucleus of an atom
layer (orbital/shell)
What is the element symbol for Carbon?
C
Of the elements listed below, choose the one that would most likely be the most reactive.
A. Neon
B. Sodium
C. Argon
D. Helium
B. Sodium
3
Which form of evidence of life is being demonstrated if a person reacts after a cold bucket of water being dumped on their head?
responds to environment