Choose the letter of the best answer. 1. Which refers to the combination of solid and liquid materials A. liquid-liquid C. solid-solid B. solid-liquid D. solid-gas 2. What do you call the material that easily dissolved? A. insoluble B. liquid C. solid D. soluble 3. Which mixtures show solid-liquid materials? C. oil and water A. gravel and cement D. soy sauce and vinegar B. muddy water 4. Which statement describes the appearance of solid-liquid materials? A. Solid-liquid do not combine evenly and you can recognize individually. B. Solid-liquid combine evenly but you cannot recognize individually C. When you mix all solid with liquid, the solid may disappear D. Both A and B​