modeling conservation of mass

what is the law of conservation of mass?

• it states that matter cannot be created nor destroyed

• it states that mass measures how much matter is in a substance

• it states that the mass of all reactants must equal the mass of all products

• it states that chemical equations represent the conservation of mass in a chemical reaction

Tags

NGSS.MS-PS1-5

what is a chemical equation?

• chemical formulas and symbols are written to represent a reaction

• a chemical equation is an equation with chemicals combined into one chemical

• chemical equations represent the conservation of mass in a chemical reaction

• a dog that ate chemicals

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NGSS.MS-PS1-1

NGSS.MS-PS1-5

where are the reactants in an equation?

• The reactants are on the left side of the equation

• the reactants are on the right side of an equation

where are the products in an equation?

• the products are on the right side of the equation

• the products are on the left side of the equation

what is a reactant?

• the substance that reacts to the yield

• the substance that reacts to products

• a substance that takes part in and undergoes change during a reaction

• a substance that does not take part in and undergoes change during a reaction

Tags

NGSS.MS-PS1-5

what is a product?

• a substance produced during a chemical reaction

• a substance produced after a reactant

• a substance that is formed right after the yield

• a substance right after the reactants

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NGSS.MS-PS1-2

what is a subscript?

• shows the number of a specific type of atom present

• numbers written below and to the right of chemical symbols

• goes right before the yield

• goes right after the yield, and describes the reactants and products of a chemical equation

Tags

NGSS.MS-PS1-1

a coefficient is....

• a number placed in front of a chemical symbol

• a number placed infront of a formula in order to balance the equation

• the number placed before the reacteant to balance the equation

• the number placed after the formula to balance the equation

Tags

NGSS.MS-PS1-5

what is a covolent compound?

• forms when two or more atoms combine by sharing electrons

• forms when two states of matter combine

• forms when two elements from the periodic table merge

• forms when to atom molecules form together to form a compound molecule

Tags

NGSS.MS-PS1-1

whats the smallest unit of a covelent compound?

• molecule

• atom

• electron

• reactant

Tags

NGSS.MS-PS1-1