4oC_CHEMISTRY_LOREN.PALOMA

|Elements|

100

What element is Fe?

Iron

200

P is...

Phosphorus

300

Sr is tin, true or false?

False, Sr is strontium

400

Why oxygen and hydrogen are almost 100% of the mass of the oceans?

Because they are the components of water, the most abundant substance in the oceans

500

H₂O is an oxide or a hydride?

An oxide

|Oxidation numbers|

100

What is/are the oxidation number/s of O?

-1, -2

200

What is/are the oxidation number/s of F?

-1

300

What is/are the oxidation number/s of Mn?

+2, +4, +6, +7

400

What is/are the oxidation number/s of Rn?

None

500

What is/are the oxidation number/s of At?

+-1, +3, +5, +7

|Oxides & hydroxides|

100

BaO₂ is...

A peroxide

200

Fe₂O₃ is one of the three main oxides of iron and is Iron(II). True or false?

False, because it is Iron (III)

300

What compound is SiH₄?

Silane

400

The formula for Hydrogen fluoride is a) HF b) FH c) HFO?

A) HF

500

Cl₂O₅ is an inorganic or an organic compound?

Inorganic

|Salts|

100

In binary salts, 1 element is usually a metal with a + number and the other a non-metal with a - number. T or F?

True

200

What's the correct formula for B₃S₂?

B₂S₃

300

Ni(ClO₂)₂ is the formula of...

Nickel hypochlorite (II)

400

Trisodium tetraoxide phosphate's formula is...

Na₃PO₄

500

What are salts?

Salts are ionic compounds which, when dissolved in water, break up completely into ions.

|Periodic table|

100

What's the name of the group that doesn't have oxidation numbers?

Noble Gases

200

All elements that start with P and have another letter, are +2, +4. True or False?

True, Pd, Pt, Pb, Po; +2, +4

300

In which group and period do we find Bi?

Group 15, period 6

400

Who created the Periodic Table?

Dimitri Mendeleev

500

How many elements are?

At the moment there are 118 in the table, but there are still more