chemical/physical changes
Physical changes occur when the ______ of a substance changes, but the composition is still the same.
appearance
What element is K on the periodic table?
Potassium
what charge does a proton have?
positive
KoolAid is an example of what
homogeneous mixture
Ionic bonds ____
transfer
what change makes a new substance?
Chemical
Ag is what element on the periodic table
silver
what is the charge of a neutron?
neutral or 0
cupcakes is an example of
heterogeneous mixture
covalent bonds _____
share
Fizzing, foaming, and smoke is an example of?
A chemical change
Ge is what element on the periodic table?
Germanium
what does atomic mass tell you?
number of protons and neutrons
Elements and compounds are what
pure substances
Is P4O10 Ionic or covalent?
Covalent
melting,freezing, or changing size or shape is an example of what change?
Physical
what are the rows on the periodic table called?
periods
what does atomic number tell u?
protons and neutrons
Salad is an example of what?
Heterogeneous mixture
is N2O covalent or Ionic?
covalent
change in temperature is an example of:
chemical change
how many families are on the periodic table?
18
where are electrons located
electron cloud
Is sugar an element or compound?
Compound
is 2Na+Cl2 ------> 2NaCL balanced or not?
balanced