Grade 9 - Atoms & Ions
CLUE: This particle has a positive charge and is found in the nucleus.
proton
CLUE: What are the electrons in the outermost shell called?
valence electrons
CLUE: The anchor introduced the evening news and reported on the day's biggest stories. What does "anchor" mean?
presenter/commentator
CLUE: All living things are made of what?
cells
CLUE: What is the longest part of the cell cycle?
CLUE: This particle has a negative charge.
electron
CLUE: According to the octet rule, atoms are generally most stable when they have how many electrons in their outer shell?
8
CLUE: The hikers reached the summit just before sunset and could see the entire valley below. What does "summit" mean?
CLUE: What structure controls what enters and leaves the cell?
List the four stages of mitosis in order.
prophase, metaphase, anaphase, and telophase
CLUE: An atom has 12 protons and 10 electrons. What is its overall charge?
+2
CLUE: Metals usually gain or lose electrons?
lose
CLUE: After losing the championship game, the team was dejected as they walked back to the locker room. What does "dejected" mean?
disappointed or sad
CLUE: What type of cell does not have a nucleus?
prokaryotic
In which phase do sister chromatids separate?
Anaphase
CLUE: When an atom loses electrons, it becomes what type of ion?
cation
CLUE: Non-metals usually ______ electrons to become more stable.
gain or share
CLUE: The teacher asked Marcus to elaborate on his answer because he had only given one sentence. What does "elaborate" mean?
give more details or explain something further
CLUE: A cell contains chloroplasts. What type of cell is it?
plant cell
The final physical division of cytoplasm that splits a single cell into 2 distinct daughter cells.
Cytokinesis
CLUE: An atom has 17 protons and 18 electrons. Is it a cation or anion, and what is its charge?
ANSWER: What is an anion with a -1 charge?
CLUE: Oxygen has six valence electrons. How many more does it need to complete an octet?
2
CLUE: The witness gave an ambiguous answer, leaving the investigators unsure about what she actually meant. What does "ambiguous" mean?
unclear or having more than one possible meaning
CLUE: What organelle is known as the powerhouse of the cell?
mitchondria
Stage where DNA condenses into visible chromosomes
prophase