Complete the following table for the reactions that occur when the black powder is ignited. Balance the equations by replacing the "?" in front of each substance with a number (or leave it blank if it's a 1). Then fill in the type of reaction for each compound. Charcoal C
Sulfur S
Potassium Perchlorate KCIO3
Potassium Nitrate KNO3​

Where are chemicals found at work? a. only in cleaning products b. only in carpets and paint c. in every area of work d. only in food preparation submit

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?