Physical Science: Atoms And Elements Flashcards
What are the types of reproductive technology?
Types include drugs, insemination, in-vitro fertilization, and surrogacy.
What is the difference between physical and chemical properties?
Physical properties can be observed without changing the substance, while chemical properties involve a change in the substance.
What is the difference between physical and chemical changes?
Physical changes do not alter the chemical composition, while chemical changes result in new substances.
What is the difference between a theory and a law?
A theory explains why something happens, while a law describes what happens.
What is the purpose of using models in science?
Models help to visualize and understand complex concepts.
What is Matter?
Matter is anything that has mass and takes up space.
What is the difference between a pure substance and a mixture?
A pure substance has a uniform composition, while a mixture contains two or more substances that retain their individual properties.
What is the difference between elements and compounds?
Elements are pure substances made of one type of atom, while compounds are made of two or more different types of atoms chemically bonded.
What are the three subatomic particles?
Protons (positive charge, located in the nucleus), neutrons (neutral charge, located in the nucleus), and electrons (negative charge, located in orbitals around the nucleus).
What is a compound?
A compound is a substance formed when two or more elements are chemically bonded together.
What is the Periodic Table?
The Periodic Table organizes elements based on their atomic number and properties.
What is electricity?
Electricity is the flow of electric charge.
What is the difference between static and current electricity?
Static electricity is the buildup of charge, while current electricity is the flow of charge.
What are the four parts of a circuit?
The four parts are a power source, conductors, a load, and a switch.
What is the difference between alternating and direct current?
Alternating current (AC) changes direction periodically, while direct current (DC) flows in one direction.