1: What is one way to describe elements?

Question

A They are the smallest particles of any material.
B They are the building blocks of matter.
C They are the most expensive materials on earth.
D They break down easily.

2: What did scientists discover when they arranged elements in order of increasing atomic mass?
A a repeating pattern of properties
B a puzzling series of numbers
C alphabetical arrangement of the names of elements
D no patterns or relationships

3) What statement applies to the horizontal rows or periods in the periodic table?
A The properties are all the same.
B The elements have the same number of electrons.
C The properties change going across each row.
D The elements in each row combine easily.

Answer 1

1, B

2. A

3. C

Answer 2

1. B



2. A



3. B

Answer 3

Ah, general chemistry.. Workforce 1 elements have the 1+ oxidation quantity as an indicator to what number of valence electrons it gives off , in different words how effortless it is for the detail to combine with one other aspect. A + shows it offers off an electron, the place a - suggests it takes an electron. Valence electrons are the electrons within the outer shell of the aspect, and are those which can be given off or taken in when it combines with other factors. All factors in crew 1 have 1 valence electron, and thus are called the "alkali metals" (except for hydrogen), and are the ones most comfortably capable to kind a compound. This also explains why it's unattainable for the elements in crew 8 cannot naturally form compounds.

Answer 4

B,A,C

3B is the columns, I think (same number of electrons in the outer orbital)

Across one row, reactive metals are on the left and noble gases on the right

Answer 5

B, A, C

I just did the test that you got these questions from(K12 Physical Science) and these were the right answers.