Ch. 4.1 - Defining the Atom

Ch. 4.1

Defining the Atom

Fill in the Blanks

Elements are composed of tiny particles called _.

Fill in the Blanks

Atoms of any one element are _ from those of any other element.

Multiple Choice

True or False? Atoms of one element change into atoms of another element during chemical reactions.

• True

• False

Multiple Choice

True or False? Atoms can combine in non-whole number ratios to form compounds.

• True

• False

Multiple Choice

True or False? Atoms of one element are different from atoms of other elements.

• True

• False

Fill in the Blanks

This English chemist and schoolteacher formulated a theory to describe the structure and chemical reactivity of matter in terms of atoms. Who was he?

Fill in the Blanks

This Greek philosopher was among the first to suggest the existence of atoms. Who was he?