3 087 mots et expressions · 21 thèmes
a chart arranging chemical elements by atomic number so that recurring patterns in their properties become visible
a logarithmic measure of acidity related to hydrogen-ion activity in a solution
a substance formed as a result of a chemical reaction
matter with a definite chemical composition that is not a mixture of different substances
to undergo a chemical change, often through interaction with another substance
the speed at which reactants are consumed or products form during a chemical reaction
a chemical reaction that can proceed toward products and also in the opposite direction toward reactants
protective eyewear designed to cover the eyes and surrounding area against specified laboratory hazards
able to dissolve to an appreciable extent in a particular solvent under stated conditions
a uniform mixture in which the components are dispersed at the molecular or ionic level
the component of a solution that acts as the medium in which other components dissolve
a small, narrow laboratory container with an open top and a closed lower end
a condition involving difficulty controlling substance use and continuing it despite harmful consequences
a mental health condition involving persistent or excessive fear or anxiety that interferes with everyday life
a long-term condition in which inflamed airways can narrow, causing variable breathing difficulties
the continuous movement of blood through the heart and blood vessels around the body
a tube in the body through which blood flows, such as an artery, vein, or capillary
a member of a nutrient class that includes sugars, starches, and fiber, many of which provide energy
able to spread from one person to another, directly or indirectly
professional guidance that helps someone manage emotional, personal, or academic difficulties
a lack of enough of a nutrient needed for the body to function normally
a group of conditions in which blood glucose becomes too high because the body makes too little insulin or cannot use it effectively
food components, mainly plant carbohydrates, that are not fully digested in the small intestine and support digestive functions
the recognition of a disease or health problem at an early stage of its development
the ability to continue physical effort over time without becoming too tired to maintain it
a chemical messenger produced in the body that affects the activity of particular cells or organs
the interacting cells, tissues, and organs that help defend the body against infections and other harmful changes
the process of developing or providing immune protection against a disease, usually through vaccination
a disease caused by agents such as bacteria, viruses, fungi, or parasites
either of two organs that filter blood, remove wastes in urine, and help regulate water and dissolved substances
a group of conditions in which blood glucose becomes too high because the body makes too little insulin or cannot use it effectively
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