This printable matching worksheet on the topic of Elements & Periodic Table has 10 questions and answers to match. This matching worksheet is also available to download as a Microsoft Word document or a PDF.
Proposed by Erwin Schrödinger
Matter is neither created nor destroyed. Chemical reaction is just a rearrangement of atoms and molecules
Proposed by Niels Bohr
Suggests that atoms are mostly empty space
Suggests that atoms contain negatively charged electrons which are randomly distributed in a sphere of positive charge
Same elements can combine in different proportions to form different compounds.
tiny particles
Suggests that atoms are tiny, solid particles that make up all materials in the world
Compounds combine in a fixed proportion
A tiny indivisible particle