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Chemistry of Life
Flashcards
30 cards
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Practice quiz
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Host live
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Questions
30
Answers
1
What can radioactive isotopes be used to treat?
All of the above
Kill Bacteria
Cancer
Determine the ages of rock or fossils
2
The cell theory is contributed to.....
Einstein, Darwin, Pasteur
Einstein, Newton, Bacon
Einstein, Schwaan, and Virchow.
Schwaan, Virchow, and Schleiden
3
What are the subatomic particles in an atom?
Proton, Electron, Neutron
Proton, Nucleus, Electron
Proton, Nucleus, Neutron
Proton, Electron, Quatron
4
What is available to form chemical bonds?
Valence Nucleus
Valence Protons
Valence Electrons
Valence Neutrons
5
What is two or more substances physically combines?
Solutes
Mixtures
Solvents
Chemical compound
6
How do scientists draw conclusions?
A conclusion is an observation.
A hypothesis is a conclusion.
The conclusion is never formed.
They will draw conclusions based off the analysis.
7
What are the tiny structures inside of a cell?
Organelles
Organs
Atoms
Elements
8
A water molecule is polar because......
an even distribution of electrons for H and O.
an uneven distribution of electrons for H and O.
Zero Distribution of electrons.
Water is Non Polar.
9
What is the substance that is dissolved?
Solution
Solute
Solvent
Mixture
10
What are atoms in compounds held together by?
Chemical Outcomes
Chemical Numbers
Chemical Formulas
Chemical Bonds
11
What type of bond do we see electrons shared?
Ionic Bond
Chemical Bond
James Bond
Covalent Bond
12
What type of bond has two or more electrons transfer from one atom to another?
Chemical Bond
Covalent Bond
James Bond
Ionic Bond
13
Atoms of different elements do not all have the same ability to attract electrons.
Atomic Theory
Elements
Vander Waal Forces
Electrons
14
What is the substance in which the solute dissolves?
Mixture
Solution
Solute
Solvent
15
What is a hypothesis?
It is the solution from the analysis.
Its an educated guess based on something we've observed.
It is wandering around looking at certain species.
Its a question formed after an observation.
16
What is the term for the number of protons in an atom?
Atomic Number
Radioactive Isotope
Atomic Theory
Isotope
17
What do you call a substance that doesn't dissolve, but separates?
Solution
Suspension
Solvent
Solute
18
What is included in the cell theory?
A cell is an atom.
Cells are large structures.
Cells are not the basic unit of life.
Cell arise from pre-existing cells.
19
What type of structure forms from covalent bonds?
Atom
Element
Atomic Theory
Molecule
20
A complex cell with organelles.
All cells
Eukaryotic Cell
Prokaryotic Cell
Bacteria
21
What is a combination of two or more elements in definite proportions?
Atoms
Compound
Molecular Numbers
Molecules
22
Why can polar molecules attract to one another?
They are positive.
They are negative.
Non-polar attract.
They are partially positive, partially negative.
23
What is the basic unit of matter?
Element
Molecule
Atom
Water
24
What is the attraction of molecules between different substances?
Precision
Atomic Nucleus
Cohesion
Adhesion
25
What is an attraction of molecules from the same substance?
Adhesion
Cohesion
Elements
Molecular
26
Simple cells without membrane organelles.
None of the above
Prokaryotic Cells
Eukaryotic Cells
All Cells
27
What is the term for the same element but different number of neutrons?
Isotope
Atomic Theory
Atomic Number
Radioactive Isotope
28
What is a pure substance that consists entirely of one atom?
Compound
Atoms
Molecule
Element
29
Which one of the following is an absolute truth?
Scientific Theory
Scientific Law
Both 2 and 3.
Newton's Laws
30
Where would we find an unstable nuclei?
Atoms
Isotopes
Radioactive Isotopes
Elements
