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Chemistry

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Heloise Parisian

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โˆ™ 2021-09-30 20:41:42
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Cards in this guide (18)
What untraditional civilian jobs were women in Australia encouraged to do during World War 2

Women in Australia were encouraged to join the army. Some women even fought in battle in war zones. Others worked at industrial jobs in factories and as nurses.

The first periodic table of elements Mendeleev created contained only 45 elements

False

Elements like barium located toward the bottom of a group have a lower attraction for their valence electrons because they have a

large atomic radius.
large atomic radius.

Noble gases share which characteristics

--they don't react with other elements

--they're inert

Which information is included in each square of the periodic table of elements

Atomic Mass

Atomic Number

Symbol

Which of the following are typically included in the periodic table

element symbol and atomic number

Which of the following are characteristics of halogens

They're colored.

Their names typically end in "-ine."

They're nonmetals.

There are periods included in the periodic table

7

What are the substances that increase the rate of a chemical reaction called

Catalysts

What elements are included in Group 8a

Noble gases: He, Ne, Ar, Kr, Xe, Rn; but this strange notation (8A) exist only in US !

Mendeleevs periodic table of elements was created in 1901

Mendeleev's periodic table of elements certainly wasn't created in 1901

AB plus C plus B is the general equation for which one what types of chemical reactions

AB + C + B is not an equation: an equation requires two sets of compounds on either side of an equality sign. Furthermore, it cannot be any of the following types of reactions because there is nothing following.

What made Eli Whitney's gin better than the Churka

Eli Whitneys cotton gin was better because it JUST WAS

What is the only item found on earth in three different phases of matter at standard pressure

Water is the only item found on earth in three different phases of matter at standard pressure.

Was patience a popular card game in medeleev's time is also known as pinochle

false

Which of the following terms describes water molecules sticking to other water molecules

cohesion

Why do elements in the top right corner have high ionization energies

The elements in this part of the periodic table want to gain electrons to get to a noble gas configuration - not lose them. To lose electrons is very energetically unfavorable (high ionization energies).

atoms with low ionization energy give up their outer valence electrons with ease

true

apex

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