Question

question 1 (1 point)
which of the following substances would be considered an acid?
milk, ph = 7.2
baking soda, ph = 9.4
tomato juice, ph = 5.3
shrimp, ph = 8.1
question 2 (1 point)
isotopes of the same element have different number of protons but the same number of neutrons.
true
false

Explanation:

Question 1

• pH scale basics: Substances with pH < 7 are acidic, pH = 7 are neutral, and pH > 7 are basic.
• Milk: pH = 7.2 > 7 → basic.
• Baking soda: pH = 9.4 > 7 → basic.
• Tomato juice: pH = 5.3 < 7 → acidic.
• Shrimp: pH = 8.1 > 7 → basic.

• Isotope definition: Isotopes of the same element have the same number of protons (as they are the same element) but different numbers of neutrons (which gives them different mass numbers).

Answer:

C. tomato juice, pH = 5.3

Question 2