Graphing Techniques and Analysis

Graphing Techniques and Analysis

Assessment

Interactive Video

Chemistry

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial covers the BTEC Applied Science Level 3 Unit 2 Assignment 2 practical, focusing on calorimetry. It guides students through setting up an experiment to determine the melting or freezing point of chemicals, recording temperature data, and plotting a graph. The tutorial explains how to analyze the graph by identifying key points and calculating gradients using tangents. It also highlights common mistakes students make when drawing gradients and provides tips for accurate analysis.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary objective of the calorimetry experiment discussed in the video?

To measure the boiling point of water

To find the pH level of a solution

To determine the melting or freezing point of chemicals

To calculate the density of a liquid

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During the experiment, what should you do after heating the substance until it melts?

Immediately cool it down to room temperature

Record the temperature at regular intervals as it cools

Measure its volume

Mix it with another chemical

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should be included on the y-axis of the graph for this experiment?

Temperature

Volume

Time

Pressure

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should you avoid doing when plotting points on the graph?

Cramming all points at the top half of the graph

Using a consistent scale

Using graph paper

Labeling the axes

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to compare the melting point obtained from the graph with a data book value?

To determine the color of the chemical

To measure the chemical's viscosity

To check the purity of the chemical

To find the chemical's density

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the plateau observed in the graph during the experiment?

It indicates the boiling point

It shows the melting point

It represents the start of the experiment

It marks the end of the experiment

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a common mistake students make when drawing gradients on a graph?

Using a ruler

Labeling the axes

Drawing a line that is too steep or too flat

Using graph paper

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