integrated science a - unit 4: exam/ Key questions
with 100% correct Answers.
Terms in this set (29)
an atom of magnesium and Mg + 2Cl →→ MgCl2
two atoms of chlorine react
and yield the compound of
magnesium chloride.
examine the equation. the substances C3H8 and 5O2 are reactants that react to form
the products 3CO2 and 4H2O.
C3H8 + 5O2 →→ 3CO2 +
4H2O
what are the roles of the
substances in the equation?
element a has a half-life of 25 g
10 days. a scientist measures
out 200 g of this substance.
after 30 days pass, the
scientist reexamines the
sample.
how much element a will
remain in the sample?
lana should write and balance the chemical equation,
what should lana do to because the law of conservation of mass states that the
determine the answer to number of atoms for each element in the reactants must
her teacher's question? equal the number of atoms for each element in the
products.
, examine the unbalanced 4Al + 3O2 →→ 2Al2O3
equation.
____AI + ___O2 ->
___AI2O3
which of the answer
choices shows the
balanced equation?
examine the equation. synthesis
2Ca + O2 →→ 2CaO
what is the best
classification for the
equation's reaction?
examine the reactants of AgCl + NaNO3
the incomplete double
displacement reaction.
AgNO3 + NaCl →→
_[blank]_.
what are the products of
the double displacement
reaction?
decomposition: CaCO3 →→ CaO + CO2
which option shows a
reaction in which calcium
carbonate (CaCO3)
produces calcium oxide and
carbon dioxide?
with 100% correct Answers.
Terms in this set (29)
an atom of magnesium and Mg + 2Cl →→ MgCl2
two atoms of chlorine react
and yield the compound of
magnesium chloride.
examine the equation. the substances C3H8 and 5O2 are reactants that react to form
the products 3CO2 and 4H2O.
C3H8 + 5O2 →→ 3CO2 +
4H2O
what are the roles of the
substances in the equation?
element a has a half-life of 25 g
10 days. a scientist measures
out 200 g of this substance.
after 30 days pass, the
scientist reexamines the
sample.
how much element a will
remain in the sample?
lana should write and balance the chemical equation,
what should lana do to because the law of conservation of mass states that the
determine the answer to number of atoms for each element in the reactants must
her teacher's question? equal the number of atoms for each element in the
products.
, examine the unbalanced 4Al + 3O2 →→ 2Al2O3
equation.
____AI + ___O2 ->
___AI2O3
which of the answer
choices shows the
balanced equation?
examine the equation. synthesis
2Ca + O2 →→ 2CaO
what is the best
classification for the
equation's reaction?
examine the reactants of AgCl + NaNO3
the incomplete double
displacement reaction.
AgNO3 + NaCl →→
_[blank]_.
what are the products of
the double displacement
reaction?
decomposition: CaCO3 →→ CaO + CO2
which option shows a
reaction in which calcium
carbonate (CaCO3)
produces calcium oxide and
carbon dioxide?
