(Q).
Answer the following question given this paragraph: When glass breaks, its physical properties change. Instead of one solid sheet of glass, it now has holes and cracks. Q: Which property changes when a glass breaks? Choices: - State - Chemical - density - its physical property A:
(A).
its physical property

(Q).
Answer the following question given this paragraph: Isotopes with magic numbers of protons and/or neutrons tend to be especially stable. Elements with magic numbers of protons tend to have more stable isotopes than elements that do not. Q: Elements with magic numbers of what tend to have more stable isotopes? Choices: - nucleus - pressure - molecules - protons A:
(A).
protons

(Q).
Answer the following question given this paragraph: Inside of the nucleus, you will find the chromosomes . Chromosomes are strands of DNA wrapped around proteins. They contain genes , or small units of genetic material (DNA) that contains the code for the creation of a protein. Human cells have 46 chromosomes (23 pairs). There are hundreds to thousands of genes on each chromosome. Q: What do you call the strands of dna wrapped around proteins, which are located inside the nucleus? Choices: - receptors - ribosomes - fibrils - chromosomes A:
(A).
chromosomes