Chemistry Mid MP 5 Exam (Revised) P 1

Front

What are non-metal oxides when dissolved in water?

Back

ONLY acids.

Front

What are metal oxides classified as?

Back

ONLY bases.

Front

What is the color of phenolphthalein in an acid?

Back

Colourless.

Front

What is the color of phenolphthalein in a neutral solution?

Back

Colorless.

Front

What is the color of methyl orange in a neutral solution?

Back

Orange.

Front

Define non-metal oxides.

Back

Compounds formed from non-metals and oxygen, typically acidic when dissolved in water.

Front

Define metal oxides.

Back

Compounds formed from metals and oxygen, typically basic.

Front

What is the role of phenolphthalein in acid-base titrations?

Back

It acts as a pH indicator, changing color at different pH levels.

Front

What is the pH range where phenolphthalein changes color?

Back

From pH 8.2 (colorless) to pH 10 (pink).

Front

What is the pH range for methyl orange?

Back

It changes color from red (pH < 3.1) to yellow (pH > 4.4).