Question

1. What is an acid? Name any two acids. Lindicators and two human-made indicators.

2 name two natural indicators and two human made indicators .​

Answer 1

Answer:

One is called blue litmus paper and another is called red litmus paper. Litmus liquid and litmus paper are used to detect the acidic or basic nature of a substance.

Red cabbage and Grape juice are examples of natural indicators. Litmus paper and phenolphthalein are examples of human-made or man-made indicators.

Answer 2

Explanation:

An intersection is a point where two lines or streets cross. There are two places you're most likely to find intersections: in math class and in traffic. In math, an intersection is the spot where two lines cross. Those lines share this common point.