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organic compounds

Authored by Annmarie Klapper

Biology

9th Grade

NGSS covered

Used 12+ times

organic compounds
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13 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

what is the chemical used to test for simple sugars

Biuret test

Sudan III test

Iodine test

Benedict's test

Answer explanation

Benedict's test is used to test for simple sugars. It is a chemical test that involves the reaction of reducing sugars with Benedict's reagent, resulting in a color change from blue to green, yellow, orange, or red, depending on the concentration of sugar present.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

what does the positive test for simple sugars look like

The solution becomes cloudy

The solution forms a precipitate

The solution changes color to yellow/red/orange/green

The solution emits a foul odor like rotten eggs

Answer explanation

The positive test for simple sugars is indicated by a color change to yellow/red/orange/green.

Tags

NGSS.HS-PS1-2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

what is the chemical used to test for proteins

Biuret reagent

Potassium permanganate

Hydrochloric acid

Sodium hydroxide

Answer explanation

Biuret reagent is the chemical used to test for proteins. It reacts with proteins to produce a violet color, indicating the presence of proteins.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

what does the positive test for protein look like

Color change from blue to violet/lavender

Color change from violet/lavender to blue

No color change

Color change from blue to green

Answer explanation

The positive test for protein is indicated by a color change from blue to violet/lavender.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

what is the chemical used to test for starch

sodium chloride

hydrogen peroxide

iodine

sulfuric acid

Answer explanation

Iodine is the chemical used to test for starch. It reacts with starch to produce a blue-black color, indicating the presence of starch.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

what does the positive test for lipids look like

A color change, a red/pink layer forms

A green color change

No change in color

A sound is produced

Answer explanation

The positive test for lipids is indicated by a color change, specifically a red/pink layer forms.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

what chemical is used to test for lipids

Benedict's solution

Iodine solution

Silver nitrate

Sudan III

Answer explanation

Sudan III is the chemical used to test for lipids. It is the correct choice because it specifically reacts with lipids, producing a red color.

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