a change in matter that does not produce a new substance is a chemical change.
question 1 options:
true
false
question 2 (2 points)
a neutron is a positively charged subatomic particle.
question 2 options:
true
false
question 3 (2 points)
an electron is a negatively charged subatomic particle.
question 3 options:
true
false
question 4 (2 points)
which of the following particles are found in the nucleus of the atom?
question 4 options:
electrons and nitrons
protons and neutrons
neutrons and electrons
protons and electrons
question 5 (2 points)
the atomic number of an element tells the number of
question 5 options:
more than one of these
protons
neutrons
electrons
question 6 (2 points)
boiling an egg is a change.
question 6 options:
chemical
physical
question 7 (2 points)
coloring a picture is an example of a change.
question 7 options:
physical
chemical
question 8 (2 points)
the element nitrogen has an atomic mass of 14 and an atomic number of 7. how many neutrons does an atom of nitrogen have?
question 8 options:
14
28
7
2
question 9 (5 points)
compare and contrast physical properties and chemical properties.
question 9 options:
1 of 9 questions save