Answer the following question given this paragraph: 30.2 Discovery of the Parts of the Atom: Electrons and Nuclei Atoms are composed of negatively charged electrons, first proved to exist in cathode-ray-tube experiments, and a positively charged nucleus. All electrons are identical and have a charge-to-mass ratio of. Q: Atoms are composed of negatively charged electrons and a positively charged what? Choices: - DNA segment - neutron - bond - nucleus A:
nucleus
Answer the following question given this paragraph: The stomach is a sac-like organ at the end of the esophagus. It has thick muscular walls. The muscles contract and relax. This moves the food around and helps break it into smaller pieces. Mixing the food around with the enzyme pepsin and other chemicals helps digest proteins. Q: What is the sac-like organ at the end of the esophagus? Choices: - rectum - larynx - appendix - stomach A:
stomach
Q: Answer the following question given this paragraph: Oxidation does not necessarily require heating. Iron that is exposed to air and water slowly oxidizes in a process commonly known as rusting. Bleaches contain various compounds such as sodium hypochlorite (NaClO), which release oxygen that oxidizes stains. Hydrogen peroxide (H 2 O 2 ) releases oxygen as it spontaneously decomposes. It acts as a bleach and an antiseptic that kills bacteria by oxidizing them. Q: Oxidation does not necessarily require heating. which is the common and natural method of oxidation? Choices: - boiling - fermentation - ageing - rusting A:
A: rusting
Question: Answer the following question given this paragraph: Electron configuration notation eliminates the boxes and arrows of orbital filling diagrams. Each occupied sublevel designation is written followed by a superscript that is the number of electrons in that sublevel. For example, the hydrogen configuration is 1 s 1 , while the helium configuration is 1 s 2 . Multiple occupied sublevels are written one after another. The electron configuration of lithium is 1 s 2 2 s 1 . The sum of the superscripts in an electron configuration is equal to the number of electrons in that atom, which is in turn equal to its atomic number. Q: The sum of the superscripts in an electron configuration is equal to the number of electrons in that atom, which is in turn equal to what number? Choices: - metallic number - shell number - orbital number - atomic number A:
Answer: atomic number
*Question*
Answer the following question given this paragraph: Brain injuries can range from mild to extremely severe, but even mild injuries need medical attention. Brain injuries can result from falls, car accidents, violence, sports injuries, and war and combat. Falls are the most common cause of brain injuries, particularly in older adults and young children. Q: What are the most common causes of brain injuries? Choices: - excessive shaking - lightning strikes - alcohol poisoning - falls A:
**Answer**
falls
(Q).
Answer the following question given this paragraph: Some types of candy, such as gummi bears or taffy, are amorphous solids. Table salt has a crystalline geometry. Q: What kind of solids are gummi bears or taffy? Choices: - imperative solids - candy solids - phenomena solids - amorphous solids A:
(A).
amorphous solids