1. Patricia is studying the lanthanides and actinides. She knows these are inner transition elements. Where are they placed in the periodic table?
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Chapter 3: Atomic Structure + Ch 4
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2. Metals generally have:
3. Waleed is learning about the relationship between subatomic particles. He knows that protons and neutrons have almost equal mass. What is the approximate relative mass of a proton?
4. Chloe is studying the periodic table and learns about the names of some groups. She knows that Group 1 elements are highly reactive metals. What is the name of Group 1?
5. Ibrahim is learning about electron affinity. He knows that electron affinity is the energy change when an electron is added to a gaseous atom. Which group has the most negative electron affinities (most favorable)?
6. Atomic radius generally increases down a group due to:
7. Laura is learning about radioactivity. She discovers that some isotopes are unstable and emit radiation. What is the process called when an unstable nucleus emits particles and energy?
8. Aisha is learning about the atomic model timeline. She puts the models in order. Which is the correct chronological order?
9. The modern atomic model explains:
10. Emma is studying the group number and charge on ions. She knows that elements in Group 2 lose two electrons to form +2 ions. Which element is likely to form a +2 ion?
11. Emma is studying the periodic table and notices that Group 2 elements have 2 valence electrons. She predicts that they will form ions with a +2 charge. What is the name of Group 2?
12. Most reactive non-metals belong to:
13. Yara is learning about nuclear force. She understands that it is the force that holds protons and neutrons together in the nucleus. What is true about the nuclear force?
14. The periodic table is arranged in order of increasing:
15. The region of high probability of finding an electron is called:
16. Xia is studying the properties of noble gases. She knows that they are colorless and odorless gases. Which noble gas is used in advertising signs due to its ability to produce a distinctive color when electrified?
17. Electrons revolve around the nucleus in:
18. The maximum number of electrons in the second shell is:
19. Fatima is reviewing atomic structure and subatomic particles. She knows that electrons are found outside the nucleus. What is the approximate mass of an electron compared to a proton?
20. Which property is common in metals?
21. The outermost shell of an atom is called:
22. Ivan is learning about ions. He knows that atoms can gain or lose electrons to become ions. What is an anion?
23. Nora is studying transition elements. She notes that they have high melting points, high density, and form colored compounds. Which of the following is a characteristic property of transition elements?
24. Bilal is looking at the periodic table and identifies a horizontal row of elements. He knows that elements in the same horizontal row have the same number of electron shells. What are these horizontal rows called?
25. Who proposed the modern periodic law?
26. If an atom has atomic number 11, how many protons does it have?
27. David is studying Bohr's atomic model. He learns that Bohr proposed specific orbits for electrons. What is a key postulate of Bohr's model?
28. Ibrahim is studying the electron affinity of halogens. He knows that fluorine has a very negative electron affinity, while chlorine has an even more negative one. Which halogen has the most negative electron affinity?
29. How many groups are present in the modern periodic table?
30. Rania is studying carbon dating. She learns that carbon-14 has a half-life of about 5730 years. What does half-life mean?