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chapter 3-8th

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1.
1 point
A Russian chemist, _____________, published the first version of the periodic table in the Journal of the Russian Chemical Society in 1869.
2.
1 point
When Mendeleev arranged the elements in order of increasing ___________, he began to see a pattern.
3.
1 point
________ with similar properties fell into groups on the table.
4.
1 point
People begin to wonder about matter more than ______.
5.
1 point
They named these particles ________, a term that means "cannot be divided."
6.
1 point
Although Mendeleev's table correctly organized most of the elements, a few __________ seemed out of place.
7.
1 point
_________ revised the periodic table by arranging the elements in order of increasing number of protons in the nucleus.
8.
1 point
In the modern periodic table, the elements are still organized by increasing ____________.
9.
1 point
Today, scientists will not accept a theory that is not supported by _______________.
10.
1 point
_________ is the use of knowledge gained through science to make new products or tolls people can use.
11.
1 point
The periodic table can be divided into __________.
12.
1 point
One section consists of the first two groups, Groups 1 and 2, and the elements in __________ 13-18.
13.
1 point
A __ contains elements that have similar physical or chemical properties.
14.
1 point
These eight groups are called the ____________.
15.
1 point
They include metals, _________, and nonmetals.
16.
1 point
A __________ is a statement that can be tested.
17.
1 point
A long period passed before the _________ about the atom were developed further.
18.
1 point
The elements in Groups 3-12 are called ____________.
19.
1 point
They are all ________.
20.
1 point
Scientist came to realize that all _________ is made up of elements.
21.
1 point
An _________ is matter made of atoms of only one kind.
22.
1 point
With the exception of ________, all the metals are solids, most with high melting points.
23.
1 point
A ____ is an element that has luster, is a good conductor of heat and electricity, is malleable, and is ductile.
24.
1 point
The ability to reflect light is a property of metals called ________.
25.
1 point
Many metals can be pressed or pounded into thin sheets or shaped into objects because they are ________.
26.
1 point
Metals are also _______, which means that they can be drawn out into wires.
27.
1 point
_________, an English schoolteacher in the early nineteenth century, combined the idea of elements with the Greek theory of the atom.
28.
1 point
Dalton's ________ of the atom was tested in the second half of the nineteenth century.
29.
1 point
________ are usually gases or brittle solids at room temperature and poor conductors of heat and electricity.
30.
1 point
There are only ___ nonmetals, but they include many elements, that are essential for life-- carbon, sulfur, nitrogen, oxygen, phosphorus, and iodine.
31.
1 point
The elements between metals and nonmetals on the periodic table are called ____________.
32.
1 point
These elements are also called _________.
33.
1 point
In 1870, the English scientist _____________ did experiments with a glass tube that had almost all the air removed from it.
34.
1 point
An _________ is a piece of metal that can conduct electricity.
35.
1 point
Each element is represented on the periodic table by a box called the ___________.
36.
1 point
All gases except __________ are located on the right side of the table.
37.
1 point
Symbol for silver is _____
38.
1 point
Symbol for sodium is ______.
39.
1 point
Symbol for hydrogen is ____.
40.
1 point
Groups 1 and 2 are always found in nature combined with other ___________.
41.
1 point
Crookes's tube is known as a cathode-ray tube, or _____.
42.
1 point
They're called ___________ because of their readiness to form new substances with other elements.
43.
1 point
They are all metals except __________, the first element in group 1.
44.
1 point
The Group 1 elements have a specific family name-- ________.
45.
1 point
___________ are found in many items.
46.
1 point
Thomson then repeated the CRT experiment using different metals for the cathode and different ____ in the tube.
47.
1 point
__________ is common table salt.
48.
1 point
Each ____________ is denser and harder and has a higher melting point than the alkali metal in the same period.
49.
1 point
The elements in group 13 are all metals except ___________, which is brittle, black metalloid.
50.
1 point
These negatively charged particles are now called __________.
51.
1 point
The nonmetal ________ exists as an element in several forms.
52.
1 point
__________ also is found in all living things.
53.
1 point
________ is an important product made from sand.
54.
1 point
_____ and lead are the two heaviest elements in Group 14.
55.
1 point
Most atoms of _________ have six neutrons.
56.
1 point
Nitrogen and _____ are required by living things and are used to manufacture various items.
57.
1 point
__________ is a gas that contains nitrogen and hydrogen.
58.
1 point
The first two members of Group 16, ________ and sulfur, are essential for life.
59.
1 point
About 20 percent of ________ atmosphere is the oxygen you breath.
60.
1 point
Your body needs _________ to release the energy from the foods you eat.
61.
1 point
________ is a solid, yellow nonmetal.
62.
1 point
Element symbol of hydrogen?
63.
1 point
Element symbol of sodium?
64.
1 point
The Group 18 elements are called the __________.
65.
1 point
Chemical symbol for salt.
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