Joshua observed the changes in a cake when it was baked in an oven. What best explains that he observed a chemical change?

2 answers:

5 0

Actually, the answer is he noticed the flour and other ingredients lose their unique properties! I took this question on a test, and I went with answer A and it was actually wrong, so the correct one would be C!

madam [21]3 years ago

3 0

Joshua saw the rising batter form the cake in the oven. What Joshua observed was because of the<span> reaction of baking soda or baking powder with the liquid in the batter: These ingredients react together and cause air bubbles to form. Baking powder contains sodium hydrogen carbonate that breaks down when heated, releasing carbon dioxide that helps cake mixtures to rise during baking.</span>

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. Jack and Jill are thinking about starting a family and they come to you with a question about a rare recessive genetic disease

cupoosta [38]

Answer:

The chance of having a Child who is a Heterozygote is 50% , The chance of having a child that will completely come down with Alpers syndrome is 0%

Explanation:

Jack has a history of Alpers in his family

Jill has no history

lets assume Jack is a carrier : Ab ( because that is how he could have survived the first 10 lethal years )

Jill : AA

Therefore the probability/chance of Jack and Jill having a child with Alpers ( carrier ) syndrome will be 50 % as shown below

AA * Ab = AA , Ab, AA, Ab