Science Words Flashcards
What is the definition of ‘atom’?
An atom is the basic unit of a chemical element.
True or False: A molecule is made up of two or more atoms bonded together.
True
Fill in the blank: The ______ is the center of an atom, containing protons and neutrons.
nucleus
What is the term for the smallest particle of a substance that retains its chemical properties?
molecule
What is the definition of ‘photosynthesis’?
Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.
Which particle has a positive charge?
proton
True or False: Electrons are found in the nucleus of an atom.
False
What is the term for the change of state from liquid to gas?
evaporation
Fill in the blank: ______ is the force that attracts two bodies toward each other.
gravity
What is the definition of ‘element’?
An element is a pure substance that cannot be broken down into simpler substances by chemical means.
Which gas do plants absorb during photosynthesis?
carbon dioxide
What is the definition of ‘chemical reaction’?
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.
True or False: The atomic number of an element is determined by the number of protons in its nucleus.
True
What do you call the negatively charged particle in an atom?
electron
Fill in the blank: The ______ is the measure of the amount of matter in an object.
mass
What is the term for the amount of space an object occupies?
volume
What is the definition of ‘compound’?
A compound is a substance formed when two or more chemical elements are chemically bonded together.
True or False: The pH scale measures how acidic or basic a solution is.
True
What is the definition of ‘force’?
A force is any interaction that, when unopposed, will change the motion of an object.
Fill in the blank: ______ is the process of a substance transitioning from a solid to a liquid.
melting
What is the term for the energy stored in an object due to its position?
potential energy
What is the definition of ‘kinetic energy’?
Kinetic energy is the energy that an object possesses due to its motion.
True or False: An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons.
True
What do you call the process by which living organisms produce energy from food?
cellular respiration
Fill in the blank: The ______ is the basic structural and functional unit of all living organisms.
cell
What is the definition of ‘gene’?
A gene is a unit of heredity that is transferred from a parent to offspring and determines some characteristic of the offspring.
