Q: What are electrons lost during the formation of ions called? Read this paragraph and choose the correct option from the provided answers: Some elements lose one or more electrons in forming ions. These ions are known as " cations " because they are positively charged and migrate toward the negative electrode ( cathode ) in an electrical field. Looking at the periodic table below, we know that the group 1 elements are all characterized by having one s electron in the outer orbit and group 2 elements have two s electrons in the outer orbit. These electrons are loosely attached to the atom and can easily be removed, leaving more protons in the atom that there are electrons, so the resulting ion has a positive charge. Cations can also be formed from electron loss to many of the transition elements. Choices: - catalysts - oxides - isotopes - cations A:
cations

Q: What are the two basic types of combustion engines? Read this paragraph and choose the correct option from the provided answers: A combustion engine is a complex machine that burns fuel to produce thermal energy and then uses the energy to do work. Two basic types of combustion engines are external and internal combustion engines. Choices: - gas and steam - spark and steam - diesel and internal combustion - external and internal combustion engines A:
external and internal combustion engines

Q: What is the name of the black opening in the eye that lets light enter? Read this paragraph and choose the correct option from the provided answers: Next, light passes through the pupil. The pupil is a black opening in the eye that lets light enter the eye. Choices: - iris - cornea - inlet - pupil A:
pupil

Q: Plant-like protists are autotrophs, meaning they make their own what? Read this paragraph and choose the correct option from the provided answers: Plant-like protists are autotrophs, meaning they make their own food. Choices: - spores - flowers - molds - food A:
food