Science Assessment ~ Topics ~ Substances, Chemical Reactions, and Conservation of Matter ~ NGSS Link PS1.B-M.1

Substances react chemically in characteristic ways. In a chemical process, the atoms that make up the original substances are regrouped into different molecules, and these new substances have different properties from those of the reactants.

Items associated with this NGSS statement in this project (Original Project) and key idea (Whenever atoms interact with each o…)
Item ID Number	Item Description	Select This Item for My Item Bank
SC090003	The number of each kind of atom stays the same during the reaction between copper and oxygen. (This item uses circles to represent atoms.)
SC043005	When baking soda and lemon juice react in a sealed plastic bag, the weight will not change because the number of each kind of atom does not change.
SC045004	Two liquids undergo a chemical reaction in an open jar and bubbles form. The mass of the liquids is less after the reaction because some atoms went into the air.
SC102002	The number of each kind of atom stays the same during a chemical reaction. (This item uses circles to represent atoms.)
SC092004	When a liquid changes to a gas in a sealed container and the number of atoms stays the same, the mass of the jar and everything in it also stays the same.

Items associated with this NGSS statement in this project (Original Project) and other key ideas
SC066005	When two white powders react to form a yellow powder, the yellow powder is made up of the same kinds of atoms as the white powders, but the atoms are combined into different molecules.