Who used a compound microscope to see Chambers? Robert Hooke What details can Electron microscopes reveal? As the wavelength of an electron can be up to 100,000 times shorter than that of visible light photons, electron microscopes have a higher resolving power than light microscopes and can reveal the structure of smaller objects. What type […]
What changes can matter undergo?
What changes can matter undergo? Matter can undergo changes of two basic types: physical changes and chemical changes. Physical changes are processes in which a material changes its physical appearance but not its basic identity. The evaporation of water is a physical change. What are the two kinds of changes that matter may undergo describe […]
Are hydrogen balloons safe?
Are hydrogen balloons safe? “Since hydrogen is an unstable, inflammable gas, there is a great danger associated with hydrogen balloons. They easily explode and catch fire. “Flying balloons are filled with gas lighter than the atmospheric air, usually helium and hydrogen. Can hydrogen be used for balloons? Hydrogen is another gas lighter than air; it’s […]
How many bodies are in the Body Farm?
How many bodies are in the Body Farm? five bodies What are the two primary goals of the Body Farm? Download ppt “THE BODY FARM PRIMARY GOAL: To understand the processes & timetable of postmortem decay, primarily to improve determining the “time since death” in murder.” What are the five stages of decomposition? A corpse […]
Why does path of light beam become visible while passing through a smoked room?
What does molar heat capacity depend on?
What does molar heat capacity depend on? Like the heat capacity of an object, the molar heat capacity of a substance may vary, sometimes substantially, depending on the starting temperature T of the sample and the pressure P applied to it. What is the unit of molar heat capacity? The molar heat capacity is the […]
What are the 3 causes of scarcity?
What are the 3 causes of scarcity? In economics, scarcity refers to resources that a limited in quantity. There are three causes of scarcity – demand-induced, supply-induced, and structural. There are also two types of scarcity – relative and absolute. How does scarcity affect your life examples? Scarcity of resources can affect us because we […]
Why do metals gain electrons?
Why do metals gain electrons? Metals: Metals like to lose valence electrons to form cations to have a fully stable octet. They absorb energy (endothermic) to lose electrons. The electron affinity of metals is lower than that of nonmetals. Nonmetals: Nonmetals like to gain electrons to form anions to have a fully stable octet. Are […]
Is inverted how you really look?
Is inverted how you really look? You normally see yourself as a reflection such as in a mirror. This image is actually the reversed or “mirrored” image, not the photo. On the other persons phone seeing the image of you, they see the non-mirrored image which looks normal to them but weird to you. Is […]
What is the most common rock?
What is the most common rock? Sedimentary rocks Is basalt rock hard? Basalt is a hard, black volcanic rock with less than about 52 weight percent silica (SiO2). Because of basalt’s low silica content, it has a low viscosity (resistance to flow). Therefore, basaltic lava can flow quickly and easily move >20 km from a […]