Q: Mixture of metals is called what? Read this paragraph and choose the correct option from the provided answers: Metals such as iron are useful for many purposes because of their unique properties. For example, they can conduct electricity and bend without breaking. However, pure metals may be less useful than mixtures of metals with other elements. For example, adding a little carbon to iron makes it much stronger. This mixture is called steel. Steel is so strong that it can hold up huge bridges, like the one pictured above. Steel is also used to make skyscrapers, cargo ships, cars, and trains. Steel is an example of an alloy. Choices: - fusion - amalgm - compound - alloy A:
alloy

Q: What kind of compounds contain positively and negatively charged ions in a ratio that results in an overall charge of zero? Read this paragraph and choose the correct option from the provided answers: Summary The atoms in chemical compounds are held together by attractive electrostatic interactions known as chemical bonds. Ionic compounds contain positively and negatively charged ions in a ratio that results in an overall charge of zero. The ions are held together in a regular spatial arrangement by electrostatic forces. Mostcovalent compounds consist of molecules, groups of atoms in which one or more pairs of electrons are shared by at least two atoms to form a covalent bond. The atoms in molecules are held together by the electrostatic attractionbetween the positively charged nuclei of the bonded atoms and the negatively charged electrons shared by the nuclei. The molecular formula of a covalent compound gives the types and numbers of atoms present. Compounds that contain predominantly carbon and hydrogen are called organic compounds, whereas compounds that consist primarily of elements other than carbon and hydrogen areinorganic compounds. Diatomic molecules contain two atoms, andpolyatomic molecules contain more than two. A structural formula indicates the composition and approximate structure and shape of a molecule. Single bonds, double bonds, and triple bonds are covalent bonds in which one, two, and three pairs of electrons, respectively, are shared between two Saylor URL: http://www. saylor. org/books. Choices: - neutral compounds - zero charged compunds - zeronic ions - ionic compounds A:
ionic compounds

Q: Q: What is the smallest unit of structure and function of all living organisms? Read this paragraph and choose the correct option from the provided answers: The cell is the smallest unit of structure and function of all living organisms. But this smallest of units still performs some very complex processes. In fact, for some organisms, just one cell must do everything necessary for life. Choices: - atom - particle - proton - cell A:
A: cell

Question: Q: What is the exchange of gases between the body and outside air? Read this paragraph and choose the correct option from the provided answers: Respiration is the exchange of gases between the body and the outside air. Choices: - metabolism - secretion - expulsion - respiration A:
Answer: respiration

*Question*
Q: What occurs where the water motion slows? Read this paragraph and choose the correct option from the provided answers: Longshore drift continually moves sand along the shore. Deposition occurs where the water motion slows. The smallest particles, such as silt and clay, are deposited away from shore. This is where the water is calmer. Larger particles are deposited onshore. This is where waves and other motions are strongest. Choices: - diffusion - vapor - erosion - deposition A:
**Answer**
deposition

(Question)
Q: What process that begins in utero during fetal development and continues on into adolescence involves closing of the skull? Read this paragraph and choose the correct option from the provided answers: Intramembranous ossification begins in utero during fetal development and continues on into adolescence. At birth, the skull and clavicles are not fully ossified nor are the sutures of the skull closed. This allows the skull and shoulders to deform during passage through the birth canal. The last bones to ossify via intramembranous ossification are the flat bones of the face, which reach their adult size at the end of the adolescent growth spurt. Choices: - incubation - elongation - calcification - ossification A:
(Answer)
ossification