in a chemical reaction, matter is neither created nor destroyed. what is the definition of a scientific theory? a model that explains underlying reasons for observations and laws.
What is a good definition of chemistry quizlet?
A good definition of chemistry is: the science that seeks to understand the interactions of molecules for the sake of advancing human control over nature.
What are chemicals quizlet?
Chemicals are what make up everything around us, including ourselves. Some examples of chemicals include sugar, carbon dioxide and water that make up soda.
How is chemistry connected to everyday life and how is it relevant outside the chemistry laboratory quizlet?
How is chemistry connected to everyday life? How is chemistry relevant outside the chemistry laboratory? Chemistry is connected to everyday life because molecules are interacting with you to produce all the experiences you have, form your dreams while asleep to watching the stars at night.
What is chemistry definition History & branches quizlet?
Chemistry. the science that deals with the composition and properties of substances and various elementary forms of matter. a branch of knowledge or study dealing with a body of facts or truths systematically arranged and showing the operation of general laws: Mass.
What is the definition of matter quizlet?
matter. anything that has mass and takes up space. physical property. a characteristic of an object that can be observed or measured without changing the object.
What is the definition of scientific theory in chemistry?
A theory is a carefully thought-out explanation for observations of the natural world that has been constructed using the scientific method, and which brings together many facts and hypotheses.
How does chemistry relate to life?
Chemistry is essential for meeting our basic needs of food, clothing, shelter, health, energy, and clean air, water, and soil. Chemical technologies enrich our quality of life in numerous ways by providing new solutions to problems in health, materials, and energy usage.
What is the definition of a scientific theory quizlet?
Scientific Theory. A well-tested explanation that unifies a broad range of observations and hypotheses and that enables scientists to make accurate predictions about new situations.
Is all matter made of chemicals?
All matter, including us, is made of chemicals. Chemistry is the study of the composition, structure, properties and reactions of matter. Everything is made of chemicals. This includes the whole Earth – all matter in it and on it is made of chemicals.
Are chemicals and chemical reactions important for life Why or why not quizlet?
Chemical reactions are important because some chemical changes may threaten the health and well-being of a plant and animal life.
What does not change during a chemical reaction?
The amount of matter does not change during a chemical reaction. The atoms are simply rearranged to form new substances. The law of conservation of matter states that matter can neither be created nor destroyed, but can be changed in form.
Which characteristic is necessary for success in understanding chemistry?
What characteristics are necessary for success in understanding chemistry? Curiosity, calculation, and commitment.
Which of the following is an example of a scientific law quizlet?
An example of a scientific law is the law of conservation of mass, which states that matter is neither created nor destroyed in a chemical reaction.
How is a scientific theory different from either a hypothesis or scientific law quizlet?
A hypothesis is a definite explanation for an observation; a theory is just an educated guess.
Which branch of chemistry is concerned with the chemical processes that occur within living organisms?
Biochemistry is where science is applied to the study of living organisms and the chemical processes within them. It is a laboratory-based science that brings together biology and chemistry.
What are the subdivision of chemistry?
Traditionally, chemistry has been broken into five main subdisciplines: Organic, Analytical, Physical, Inorganic and Biochemistry.
Are atoms made of molecules or are molecules made of atoms quizlet?
Are atoms made of molecules or are molecules made of atoms? Molecules are made of atoms.
What is matter in chemistry quizlet?
Matter. -is all around us. -can be identified by its physical or chemical properties. -any substance regs takes up space (volume) and has mass. Atom.
Which of the following is a property of matter quizlet?
Mass, weight, volume, and density are physical properties of matter.
Are molecules made out of atoms?
Molecules are made up of one or more atoms. If they contain more than one atom, the atoms can be the same (an oxygen molecule has two oxygen atoms) or different (a water molecule has two hydrogen atoms and one oxygen atom). Biological molecules, such as proteins and DNA, can be made up of many thousands of atoms.
What is an example of theory in chemistry?
Chemistry: the kinetic theory of gases, valence bond theory, Lewis theory, molecular orbital theory.
Which definition best explains science?
“Science is the pursuit of knowledge and understanding of the natural and social world following a systematic methodology based on evidence.”
What is a simple definition of theory?
In everyday use, the word “theory” often means an untested hunch, or a guess without supporting evidence. But for scientists, a theory has nearly the opposite meaning. A theory is a well-substantiated explanation of an aspect of the natural world that can incorporate laws, hypotheses and facts.
What is chemistry used in?
The industrial applications of chemistry directly affect our daily lives—what we eat, what we wear, our transport, the technology we use, how we treat illnesses and how we get electricity—to name just a few. Research is constantly deepening our understanding of chemistry, and leading to new discoveries.