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2425_Cycle 4 - Acids, Bases and Salts

2425_Cycle 4 - Acids, Bases and Salts

Assessment

Presentation

Science

7th Grade

Practice Problem

Medium

NGSS
MS-ESS1-1, MS-ESS1-2, MS-PS2-4

+4

Standards-aligned

Created by

Maria Bual

Used 9+ times

FREE Resource

23 Slides • 12 Questions

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Open Ended

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Why does lemon taste sour?

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Multiple Choice

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Coffee taste bitter.

Does that mean coffee is a basic solution?

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YES

2

NO

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Multiple Select

How do we classify an acidic, a basic and a salt solution?

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by tasting the solution

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using Indicators

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using the pH Scale

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Multiple Choice

What does pH mean?

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The concentration of hydrogen ions in a solution

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The strength of an acid or base in a solution

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The measure of a solution's acidity or basicity

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The ability of a substance to conduct electricity

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Match

PhET Activity: Acids or Bases

Classify whether each of the following is an acidic or basic solution.

Battery acid

Drain cleaner

Hand soap

Milk

acidic

basic

basic

acidic

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Multiple Choice

PhET Activity: Acids or Bases

Is the pH of 0.20 L of blood acidic or basic?

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Acidic

2

Basic

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Multiple Choice

PhET Activity: Acids or Bases

Is the pH of 0.40 L of chicken soup acidic or basic?

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acidic

2

basic

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Multiple Choice

What happens to the pH level of orange juice when water is added?

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The pH level remains the same.

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The pH level decreases (becomes less basic).

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The pH level increases (becomes more basic).

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The pH level becomes acidic.

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Multiple Choice

What happens to the pH level of hand soap when water is added?

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The pH level increases (becomes more basic).

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The pH level decreases (becomes more acidic).

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Becomes neutral

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Poll

Skills Checklist!

I CAN identify the physical properties of acids, bases, and salts.

Absolutely!

Yes, but I have few clarifications in mind.

No. I don't understand it at all.

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Poll

Skills Checklist!

I CAN classify solutions as either acids, bases, or neutral.

Absolutely!

Yes, but I have few clarifications in mind.

No. I don't understand it at all.

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Open Ended

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Today I learned that . . .

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