can someone help me on these 2 questions so i can get an idea to do the rest of mine.

im given hydrochloric acid and a marble chip (calcium carbonate i think), so what would be the reactants, the word equation, the balanced equation, prediction of type of reaction for this?

and another one is with sulfuric acid, phenolphthalein (which is an acide base indicator my teacher said) and sodium hydroxide.

Certainly! Let's go through each question step by step.

1. Hydrochloric acid and marble chip (calcium carbonate)
- Reactants: Hydrochloric acid and calcium carbonate (marble chip)
- Word equation: Hydrochloric acid + Calcium carbonate → Calcium chloride + Carbon dioxide + Water
- Balanced equation: 2HCl + CaCO3 → CaCl2 + CO2 + H2O
- Prediction of type of reaction: This is a chemical reaction known as a "neutralization" reaction between an acid and a carbonate, resulting in the formation of a salt, carbon dioxide, and water.

2. Sulfuric acid, phenolphthalein, and sodium hydroxide
- Reactants: Sulfuric acid and sodium hydroxide
- Word equation: Sulfuric acid + Sodium hydroxide → Sodium sulfate + Water
- Balanced equation: H2SO4 + 2NaOH → Na2SO4 + 2H2O
- Prediction of type of reaction: This is a chemical reaction known as an "acid-base" reaction, where sulfuric acid (an acid) reacts with sodium hydroxide (a base) to produce sodium sulfate (a salt) and water.

Remember, for balancing equations, you need to make sure the number of atoms of each element is the same on both sides of the equation. You can achieve this by adjusting the coefficients (numbers in front of the compounds).

I hope this helps you get an idea of how to approach the rest of your questions! Let me know if you have any further questions.