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Biology Basics 9-10 Flashcards | StudBud
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Biology Basics 9-10
Biology Basics 9-10
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Atoms, Molecules, Compounds, Elements, Isotopes, Chemical Bonds, Polarity.
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
Which is a bond where electrons are transferred between elements?
Dionic
Covalent
Ionic
Transfonic
2
How many valence electrons does Carbon have?
8
6
4
2
3
Elements in row 2 and 3 need ___________ valence electrons to complete their orbitals.
4
10
8
6
4
Which of these elements is not CHNOPS
Oxygen
Potasium
Hygrogen
Carbon
5
Which of the following is the smallest?
hemoglobin protein
a grain of salt
hydrogen atom
a neutron
6
Which is a chemical bond where elements share electrons?
a salt bond
ionic
covalent
cooperational
7
Which of these elements is not CHNOPS
Nitrogen
Phosphorous
Chlorine
Sulphur
8
What charges do electrons have?
neutral charge
no charge
negative charge
positive charge
9
What is the chemical formula of glucose?
C12O6H12
CH2O
CH4OH
C6H12O6
10
How many naturally occurring elements exist on Earth?
98
110
92
80
11
How many valence electrons are needed to complete the first orbital?
8
2
4
6
12
What charge do protons have?
negative
positive
no charge
neutral
13
What is the smallest Element?
Hydrogen
Helium
an Electron
The Atom
14
In an atom, what circulates the nucleus?
neutrons
electrons
quarks
protons
15
What are valence electrons?
neutrons with neutral charges
the most stable electrons
positively charged electrons
electrons in the outer shell
