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Question | Answer |
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fire hazard | an object, building etc that could easily catch fire or cause a fire and thereby endanger life |
apron | a protective or decorative garment worn over the front of one's clothes and tied at the back. |
goggles | close-fitting eyeglasses with side shields, for protecting the eyes from glare, dust, water, etc. |
gloves | a covering for the hand worn for protection against cold or dirt and typically having separate parts for each finger and the thumb. |
beaker | a lipped cylindrical glass container for laboratory use. |
test tube | a thin glass tube closed at one end, used to hold small amounts of material for laboratory testing or experiments. |
density | the degree of compactness of a substance. |
mass | a coherent, typically large body of matter with no definite shape. |
volume | the amount of space that a substance or object occupies, or that is enclosed within a container, esp. when great. |
reaction | an action performed or a feeling experienced in response to a situation or event. |
atoms | the basic unit of a chemical element. |
molecules | a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. |
proton | a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign. |
subscript | the number of atoms of this element in the chemical compound. |
force | Mass x Aceleration |
acceleration | increase in the rate or speed of something |
speed | the rate at which someone or something is able to move or operate |
distance | an amount of space between two things or people. |
newton | the SI unit of force. |
inertia | a tendency to do nothing or to remain unchanged. |