Review for Exam 1 Speers Biology 1610
SLCC Questions With Complete Solutions
Scientific Method A series of steps to plan and carry out investigations
Hypothesis vs. Theory Hypothesis- a testable observation
Theory- supported by a large body of evidence
What is true about a good hypothesis? It must be testable
What does falsifiable mean? Can be ruled out by data
4 main elements of life carbon, hydrogen, oxygen, nitrogen
Trace elements an element indispensable for life but required in extremely minute
amounts.
Elements & Isotopes Elements- any substance that cannot be broken down to any other
substance by chemical reactions
, Review for Exam 1 Speers Biology 1610
SLCC Questions With Complete Solutions
Isotopes- Different forms of the same element. Different number of neutrons.
Atoms Smallest unit of matter
Where is a proton located and what is the electrical charge? Proton is located in nucleus of
an atom and is a single positive electrical charge
Where is the neutron located and what is the electrical charge? Neutron is found in the
nucleus of an atom and has a neutral charge
Where is the electron located and what is the electrical charge? Electrons revolve around
the nucleus and is negatively charged
Which particle defines or distinguished different elements? Protons
What does the atomic number represent? The number of protons in an atom
What does the mass number represent? Total number of protons and neutrons in an atom
SLCC Questions With Complete Solutions
Scientific Method A series of steps to plan and carry out investigations
Hypothesis vs. Theory Hypothesis- a testable observation
Theory- supported by a large body of evidence
What is true about a good hypothesis? It must be testable
What does falsifiable mean? Can be ruled out by data
4 main elements of life carbon, hydrogen, oxygen, nitrogen
Trace elements an element indispensable for life but required in extremely minute
amounts.
Elements & Isotopes Elements- any substance that cannot be broken down to any other
substance by chemical reactions
, Review for Exam 1 Speers Biology 1610
SLCC Questions With Complete Solutions
Isotopes- Different forms of the same element. Different number of neutrons.
Atoms Smallest unit of matter
Where is a proton located and what is the electrical charge? Proton is located in nucleus of
an atom and is a single positive electrical charge
Where is the neutron located and what is the electrical charge? Neutron is found in the
nucleus of an atom and has a neutral charge
Where is the electron located and what is the electrical charge? Electrons revolve around
the nucleus and is negatively charged
Which particle defines or distinguished different elements? Protons
What does the atomic number represent? The number of protons in an atom
What does the mass number represent? Total number of protons and neutrons in an atom
