Atoms combined chemically to form ____.
molecules
A type of matter that is made of the same kind of atoms is called ____
a compound
a mixture
an element
How many kinds of atoms are shown by this model?
two
True or False? This model shows one kind of atoms.
False
Matter needs ___ to change.
energy
True or False? This model shows one kind of atoms.
Matter is made of ____.
atoms
A type of matter made of two or more substances physically combined is called ____.
a substance
an element
a mixture
a compound
Things that have mass and takes up space is called ___.
matter
True or False? This model shows two kinds of atoms.
True
How many kinds of atoms are shown by this model?
three