The atom
Parts and charges of an atom
Neutron --> No Charge
Protons --> Positive
Electrons --> Negative
Describe how heat is transferred when you touch a piece of cold ice with your finger?
Energy is transferred from a higher temperature substance to a lower temperature substance.Heat moves from your finger into the ice, making your finger a little cooler and the ice a little warmer.
To balance equations, adjust these.
What is a coefficient?
What are the three common subatomic particles?
Where are they found within an atom?
What charge do they have?
Proton - in the nucleus, positive charge
Neutron - in the nucleus, no charge
Electron - outside the nucleus, negative charge
RNA has how many strands?
How many is one?
The number of protons and electrons
What is the atomic number
Which two states of matter take the shape of their container?
What are liquid and gas?
When balancing equations you may not change these!
What are subscripts?
The atoms in a column of the periodic table all have the same what?
a) The same abbreviation
b) The same number of energy levels
c) The same number of electrons
d) The same number of electrons in the outer energy level
How many different bases (letters) are in DNA (and name them)?
Number of protons and neutrons
What is the mass number?
A substance turns from a liquid to a solid because heat is being removed. This process is called what?
What is FREEZING?
The ratio of a balanced chemical equation must be expressed as this.
What is the least, whole number ratio.
Balance this equation (what will the coefficients be when it is balanced?): NaCl = Na + Cl2
What is 2,2,1?
What base is complementary to adenine (A)?
What is thymine (T)?
Atoms in which the number of electrons does not equal the number of protons.
What are ions?
To get from a solid to a liquid, does heat have to be added or removed?
Heat has to be added
Balancing equations follows the Law of what?
What is the Law of Conservation of Matter?
Balance this equation (what will the coefficients be when this is balanced?): Ag + HCl = AgCl + H2
What are 2,2,2,1?
What are the three parts of a nucleotide, and what are their functions?
Phosphate - links to the next nucleotide in the polymer
Sugar - either ribose or deoxyribose; determines whether it is a DNA or RNA nucleotide
Base - determines what letter the nucleotide will be represented by
The arrangement of electrons in an atom (use an example on the Periodic Table).
What is 2 in the innermost shell and 8 in the other shell (if Ne, but this will differ depending on the element chosen)
When changing from a solid to a gas, are the particles speeding up or slowing down?
Speeding up
Balance this equation (what will the coefficients be when it is balanced): H2 + O2 = H2O
What are 2, 1, 2
Draw a diagram to explain what happens between sodium (Na) and chlorine (Cl) atoms to make an ionic bond to form sodium chloride (NaCl).
Show picture
DNA indirectly codes for ___.
What is protein?