A substance that speeds up the rate of a chemical reaction is called a Catalyst.
B. Only the “Analysis” section includes specific data comparisons, and only the “Conclusion” section suggests further research.
Explanation - Hypothesis is given when a question is identified and background research has been done. To validate the hypothesis, an experiment is carried out. While carrying out the experiment, analysis of the data is done where comparisons between the data are made.
While concluding, future work or research is mentioned. Hypothesis, analysis and conclusion are a series of steps that are carried out while doing a research. Therefore, these steps must be followed for proper result.
Answer:
It's solid and hard.
Explanation:
The form of apatite use in toothpaste is hydroxyapatite which is a natural occuring minerals that is made up ofcalcium phosphate. The majority of the enamel and dentin in your teeth is made from a form of hydroxyapatite. It form hexagonal crystals. Toothpastes that contain hydroxyapatite can help remineralize the enamel, reducing the risk of cavities and erosion. It's physical properties to know ( solid and hardness) help to strengthen or make the teeth bone strong and also give the bone rigidity.