Chemistry Midterm

Chemistry Midterm

Assessment

Flashcard

Chemistry

10th - 12th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the balanced equation for the reaction of iron and chlorine gas?

Back

2 Fe + 3 Cl₂ → 2 FeCl₃

2.

FLASHCARD QUESTION

Front

What is the chemical formula for aluminum nitrate?

Back

Al(NO₃)₃

3.

FLASHCARD QUESTION

Front

What type of reaction is represented by the equation C₇H₁₆ + 10 O₂ → 7 CO₂ + 8 H₂O?

Back

Combustion

4.

FLASHCARD QUESTION

Front

How do you determine the empirical formula from percentage composition?

Back

Convert percentages to grams, then to moles, and simplify the ratio.

5.

FLASHCARD QUESTION

Front

What is the empirical formula for a compound with 42.07% Na, 18.89% P, and 39.04% O?

Back

Na₃PO₄

6.

FLASHCARD QUESTION

Front

What is the molar mass of PbSO₄?

Back

303.27 g/mol

7.

FLASHCARD QUESTION

Front

Define a synthesis reaction in chemistry.

Back

A reaction where two or more substances combine to form a new compound.

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