Astudent places a sample of white sodium bicarbonate powder in a test tube and heats it. the student observes that the sodium bicarbonate undergoes a chemical change. after the change, what must be true about the substance in the test tube?

This line graph compares the growth of plants that were kept in the sun for different amounts of time.a)  on day 7, the plants kept in the sun for 3 hours were how tall? b)  on day 7, the plants kept in the sun for 6 hours were how tall? c)    on day 10, the plants kept in the sun for 9 hours were how tall? d)  on day 11, the plant that was grown with 1 hour of sunlight was how tall? e)  based on the graph, the plant grows best in what amount of sunlight?

Which atom or ion is the largest? 0 a. 0 0 0 0 e. li

Sugar is dissolved in water. which is the solute? sugar neither both water