Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Quizzes

Create quizzes and tests automatically from your content using AI.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing

Search...

Environmental Chemistry: Pollution and Toxins

12 Questions

0 Views

Environmental Chemistry: Pollution and Toxins

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the definition of a pollutant?

A substance that produces serious health problems or death

A substance in the environment that produces a condition that is harmful to living things (correct)

A substance that is beneficial to the environment

A substance that is only found in industrial settings

What is the term for the increase in concentration of a substance as it moves up the food chain/web?

Biological magnification (correct)

Pollution

Toxicity

Bioaccumulation

What is the unit of measurement for LD50?

Grams per liter

No unit, it's a ratio (correct)

Milligrams per kilogram

Parts per million

What is the concentration of a substance in parts per million (ppm) equivalent to?

1 part substance in 1 000 000 parts of H2O Signup and view all the answers

What is the purpose of LD50?

To compare the effects of different toxins Signup and view all the answers

How would you calculate the concentration in ppm if you add 0.1 mL of DDT to 2000 mL of water?

Divide 0.1 by 2000 and multiply by 1 000 000 Signup and view all the answers

What is the equivalent ratio set up for parts per million?

1 mL out of 1 million mL Signup and view all the answers

What is the disadvantage of the dump method of waste disposal?

Substances can leach into surrounding soil and groundwater Signup and view all the answers

What is the purpose of a septic tank?

To break down organic materials using bacteria Signup and view all the answers

What is leaching in the context of waste disposal?

The removal of materials by dissolving them away from solids Signup and view all the answers

What is an advantage of the landfill method of waste disposal?

It prevents leaching Signup and view all the answers

What is the purpose of a sewage treatment plant?

To treat wastewater with several steps including filtration and chemical treatment Signup and view all the answers