SCIENCE SAYS...
Clue: An organized way of gathering and analyzing evidence about the natural world.
Answer: What is science?
Clue: The scientific study of life.
Answer: What is biology?
Clue: The basic unit of matter.
Answer: What is an atom?
Clue: A substance formed by the chemical combination of two or more elements in definite proportions.
Answer: What is a compound?
Clue: The attraction between molecules of the same substance.
Answer: What is cohesion?
Clue: The process of carefully noticing and describing events or processes.
Answer: What is an observation?
Clue: The genetic material that organisms inherit from their parents.
Answer: What is DNA?
Clue: The center of an atom that contains protons and neutrons.
Answer: What is the nucleus?
Clue: The smallest unit of most compounds that displays all the properties of that compound.
Answer: What is a molecule?
Clue: The force of attraction between different kinds of molecules.
Answer: What is adhesion?
Clue: A possible explanation for observations or a possible answer to a scientific question.
Answer: What is a hypothesis?
Clue: A signal to which an organism responds.
Answer: What is a stimulus?
Clue: This negatively charged particle is located in the space surrounding the nucleus.
Answer: What is an electron?
Clue: This chemical bond forms when one or more electrons are transferred from one atom to another.
Answer: What is an ionic bond?
Clue: A type of mixture in which all the components are evenly distributed.
Answer: What is a solution?
Clue: A well-tested explanation that unifies a broad range of observations and hypotheses and allows scientists to make predictions.
Answer: What is a theory?
Clue: The combination of chemical reactions through which an organism builds up or breaks down materials.
Answer: What is metabolism?
Clue: A pure substance that consists entirely of one type of atom.
Answer: What is an element?
Clue: This chemical bond forms when atoms share electrons.
Answer: What is a covalent bond?
Clue: A mixture of water and nondissolved material.
Answer: What is a suspension?
Clue: A scientist believes one brand of fertilizer is best before beginning an experiment. Explain what bias is and one reason a controlled experiment and control group help produce more scientific results.
Answer: Bias is a personal preference or point of view rather than a scientific one. A controlled experiment changes only one variable, and the control group provides a comparison. Scientists then use the data they collect as evidence.
Clue: Your body works to keep its internal physical and chemical conditions relatively constant even when conditions outside your body change. What process is occurring?
Answer: What is homeostasis?
Clue: Carbon-12 and carbon-14 both contain 6 protons, but they contain different numbers of neutrons. What are carbon-12 and carbon-14, and what makes them different?
Answer: They are isotopes. Isotopes have the same number of protons but different numbers of neutrons.
Clue: Sodium transfers an electron to chlorine, while hydrogen and oxygen share electrons in a water molecule. Identify the type of chemical bond in each example.
Answer: Sodium and chlorine form an ionic bond. Hydrogen and oxygen form covalent bonds.
Clue: Water molecules attracting other water molecules demonstrates one property, while water molecules being attracted to the sides of a glass demonstrates another. Name both.
Answer: Water-to-water attraction is cohesion. Water-to-glass attraction is adhesion.