Answer:
A
Explanation:
College and career planning
The Anasazi were the ancestors of the modern-day Pueblo people of Arizona and New Mexico. They were not considered a tribe, though their descendents today comprise the federally recongized Navajo Nation. Contemporary Pueblo people view the term "Anasazi" as an ethnic slur because it translates as "ancient enemy" in the Navajo language. Everything we know of these Indians comes from archaeological finds. They were suburb craftsmen and the things they made were meant to last. The homes they built, as well as pieces of their craft work and clothing, still exist today, 1800 years after they were made. Studying the early Pueblo people has given researchers a good picture of what life was like for them and other early Native Americans who are ancestors of the modern-day tribes.
Answer:
C, Writing
Explanation:
nothing really to explain
The reason why iron oxide has more mass than the iron is because Iron oxide has oxygen atoms, and pure iron does not.
When iron rusts and forms iron oxide, the iron oxide has more mass than the iron. Which statement correctly explains this
observation?
(A)Iron oxide has oxygen atoms, and pure iron does not.
(B)The oxygen atoms in iron oxide have more mass than the iron atoms in pure iron.
(C)The iron atoms in iron oxide have more mass than pure iron.
(D)There are more iron atoms in iron oxide than in pure iron.
When a chemical reaction takes place, other atoms are combined with pure elements to form compounds. This addition of another atom (oxygen) after reaction makes iron oxide formed heavier than pure iron.
Iron oxide is a chemical substance formed when pure iron rusts. The formation of iron oxide is a chemical reaction.
Hence, the correct answer to the question is; the iron is heavier because Iron oxide has oxygen atoms, and pure iron does not.
Learn more: brainly.com/question/6284546
Answer:
Krypton is a noble gas, so it was difficult for chemists to find it, as though it was a secret.
Explanation:
Krypton (₃₆Kr), an element with atomic number 36, belongs to group 18 on the periodic table of elements. This group is a specific one - it's made up of elements known as noble gases. Besides krypton, these elements are: helium, neon, argon, xenon, and radon. All noble gases were characterized relatively late compared to other elements. They all conduct electricity, fluoresce, and are odorless and colorless. Besides that, they have very low chemical reactivity. Because of their stability, they are often used to maintain a safe, constant environment. As krypton shares all of these characteristics, it was difficult for chemists to find it. That's why it was most likely given that name.
