Question

place the following items in order from lowest to highest ph milk soda oven cleaner lemon juice pure water baking soda sodium hydroxide

Explanation:

Step1: Recall pH - scale properties

Acids have pH < 7, bases have pH > 7, and neutral substances have pH = 7.

Step2: Identify acid substances

Lemon juice (pH around 2 - 3) and soda (pH around 2.5 - 4) are acids. Lemon juice is more acidic than soda.

Step3: Identify neutral substance

Pure water has a pH of 7.

Step4: Identify slightly - basic substance

Milk has a pH around 6.5 - 6.7, slightly acidic but close to neutral. Baking soda in solution has a pH around 8 - 9, basic.

Step5: Identify strong - base substances

Oven cleaner (pH around 13) and sodium hydroxide (a strong base with pH around 14) are strong bases. Oven cleaner is less basic than sodium hydroxide.

Answer:

1. Lemon juice
2. Soda
3. Milk
4. Pure water
5. Baking soda
6. Oven cleaner
7. Sodium hydroxide