CHEM 209 Lab Equipment and Practicum Review

A collection of flashcards focused on laboratory equipment identification for CHEM 209 and the specific grading criteria for the Lab Practicum rubric.

What are the specific materials and volume of the crucible listed in the locker items?

Crucible, high porcelain, $30\,ml$ (1 each).

What are the capacities of the five beakers included in the student locker?

$400$, $250$, $100$, $50$, and $30\,ml$ beakers ($5$ total).

What are the capacities of the two graduated cylinders listed?

$10\,ml$ and $50\,ml$ ($2$ total).

What are the dimensions and total quantity of the standard test tubes specified?

$16 \times 150$ ($10$ total).

What size and quantity of ignition test tube is provided?

$25 \times 200$ (1 each).

What size is the plastic wash bottle listed in the locker?

$250\,ml$ (1 each).

What is the diameter of the watch glass?

$100\,mm$ (1 each).

According to the Lab Practicum General Directions, what two things must be included for every measurement to avoid losing points?

Units and the correct number of significant figures.

What is the total point value and time duration for the CHEM 209 Lab Practicum?

$32$ pts total and $20$ minutes.

In Task 1 (Identification of Laboratory Equipment), what earns a student partial credit ($1$ pt)?

The name is correct but incomplete, or contains a minor spelling error.

What specific criteria are required for full credit on volume readings and initial/final readings in Task 2?

Correct value, correct precision for those devices, and units included.

In Task 3 (Determination of Density), how much credit is assigned for recording the three physical dimensions with correct precision and units?

$3$ pts.

Besides the crucible and triangle, what other porcelain item is listed in the locker items?

Evaporating dish, porcelain (1 each).

What are the graded components for the density calculation portion of Task 3?

Work shown for both calculations ($2$ pts) and the density answer ($2$ pts).