Chemical Reactions BELLWORK BRIEFLY WRITE ABOUT A SCIENTIFIC OBSERVATION YOU MADE RECENTLY.
History of the Atomic Theory. Law of Definite Proportions A given compound contains the same elements in exactly the same proportions by mass, regardless.
Chapter 15
Atoms: the building blocks of matter
Chapter 15 Classification of Matter. Sec. 1 Composition of Matter All materials are either made of pure substances or mixtures. Substance—an element or.
Chemical Formulas The chemical formula for Aspirin = C 9 H 8 O 4 Formulas show two things: 1.The elements in a compound and 2.The ratio of the different.
Sixth Grade Science. Physical Change A physical change is a type of change that does not change what the substance is. If you put a cup of water in the.
Chemical Reactions
History of the Atomic Theory
