Answer the following question given this paragraph: When iron and sulfur are mixed together in a certain ratio and heated, a chemical reaction occurs. This results in the formation of a unique new compound, called iron sulfide (FeS). A magnet cannot be used to mechanically separate the iron from the iron sulfide because metallic iron does not exist in the compound. Instead, another chemical reaction is required to separate the iron and sulfur. Q: When iron and sulfur are mixed together in a certain ratio and heated, what do they become? Choices: - iron oxide - rust - sulfuric acid - iron sulfide A:
iron sulfide
(Question)
Answer the following question given this paragraph: A sex chromosome is a chromosome that determines the sex of an organism. Humans have two sex chromosomes, X and Y . Females have two X chromosomes ( XX ), and males have one X and one Y chromosome ( XY ). An autosome is any chromosome other than a sex chromosome. If a trait is autosomal it will affect males and females equally. Q: What chromosome determines the sex of an organism? Choices: - ribosome - S chromosome - autosome - sex chromosome A:
(Answer)
sex chromosome
Ques: Answer the following question given this paragraph: Because glaciers move, they have characteristic features like crevasses and bergshrunds. Q: What organism captures light energy and converts it to chemical energy inside its cell? Choices: - autotrophs - plants - insects - phototrophs A:
Ans: phototrophs
(Q).
Answer the following question given this paragraph: Tennis is played on a variety of court surfaces: grass, clay, hardcourt, and even carpet. Players know that matches on different surfaces are distinctly different games. The ball bounces differently, and shoes slip on some surfaces but stick on others. These differences are a result of friction. Q: What force explains why a tennis ball bounces differently on different surfaces, and shoes slip on some surfaces but stick on others? Choices: - kinetics - vibration - temperature - friction A:
(A).
friction
Ques:Answer the following question given this paragraph: Sex hormones are chemical messengers that control sexual development and reproduction. The male reproductive system consists of structures that produce male gametes called sperm and secrete the male sex hormone testosterone. Q: What are chemical messengers that control sexual development and reproduction? Choices: - lipids - proteins - neurotransmitters - sex hormones A:

Ans:sex hormones
Answer the following question given this paragraph: Potential energy is the energy stored in an object because of its position or shape. It includes gravitational potential energy and elastic potential energy. Gravitational potential energy depends on an object's weight and height above the ground. Q: What type of energy is stored in an object because of its position or shape? Choices: - magnetic - mechanical - kinetic - potential A:
potential