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Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.

The electron density is shifted to the sulfur atom in the compound:

a)

H2S

b)

SO2

c)

S8

d)

SO3

2.

Specify the chemical element whose atoms have an electronic formula

a)

CI

b)

Mg

c)

P

d)

Si

3.

How many orbitals in the hydrogen atom on which the electrons are located:

a)

1

b)

2

c)

3

d)

4

4.

Select the formula of the salt.

a)

Na3PO4

b)

HCIO4

c)

CON

d)

HOH

5.

The relative molecular weight is...

a)

the molar mass of the compound, referred to 1/12 of the molar mass of the carbon atom -12;

b)

the mass of one mole of a substance linking two quantities mass and quantity of a substance;

c)

the molar mass of an atom assigned to 1/12 of the molar mass of a carbon atom -12;

d)

the amount of the system substance that contains as many structural units (atoms, molecules) as there are atoms in 0.012 kg of carbon -12.

6.

The science of substances, their properties and transformations of it

:

a)

Chemistry

b)

Physics

c)

Mathematics

d)

Biology

7.

Choose an alkali formula:

a)

NaOH

b)

NCL

c)

Zn(OH)2

d)

AIPO4

8.

The formula of hydrochloric acid:

a)

HCI

b)

H2SO4

c)

H2S

d)

H2SO3

9.

Gas is released when hydrochloric acid interacts with:

a)

with magnesium.

b)

with copper (II) oxide;

c)

with copper

d)

with magnesium hydroxide;

10.

Complex substances consisting of two elements, one of which is oxygen in the degree of oxidation -2

:

a)

Oxides

b)

Acids

c)

In salt

d)

hydroxides

11.

Bond in metals and alloys:

a)

Metal

b)

Ionic

c)

Covalent

d)

Hydrogen

12.

Complex substance

a)

Table salt

b)

Grey tin

c)

Red phosphorus

d)

In graphite

13.

Homogeneous mixtures are:

a)

mixtures in which the particles of their constituent substances are not distinguishable even in the most powerful microscope;

b)

mixtures in which particles of their constituent substances are visible to the naked eye or under a microscope;

c)

a substance that is distributed in another;

d)

coarse-dispersed systems with a solid dispersed phase and a liquid dispersed medium.

14.

The hydrogen chemical bond is:

a)

a chemical bond between the atom of an element with high electronegativity, having indeterminate electron pairs, of one molecule and the hydrogen atom of another molecule.

b)

the bond formed between cations and anions due to their electrostatic attraction;

c)

the bond that occurs between atoms due to the formation of common electron pairs;

d)

the bond in metals and alloys between metal atom-ions, carried out by a set of valence electrons;

15.

Select the acid formula

a)

HCI

b)

CaSO4

c)

NaOH

d)

CuO

16.

Covalent polar coupling is characteristic

a)

HCI

b)

H2

c)

N2

d)

CaO

17.

The Number of groups in the Periodic system of chemical elements of D. I. Mendeleev;

a)

In VIII

b)

III

c)

IV

d)

VII

18.

In which row are the formulas of substances with only a covalent polar bond written:

a)

HI H2O PH3

b)

CI2 NH3 HCI

c)

HBr NO Br2

d)

H2S H2O S8

19.

The dispersed phase of the ceramic products is:

a)

Gas

b)

Solid

c)

Into liquid

d)

depends on the type of ceramic product.

20.

The relationship between magnesium and sulfur in magnesium sulfide

a)

Ionic

b)

Covalent non-polar

c)

Molecular

d)

Metal

21.

The number of orbitals in the helium atom on which the electrons are located:

a)

1

b)

2

c)

3

d)

4

22.

Specify the chemical element whose atoms have an electronic formul

a

a)

AI

b)

Na

c)

P

d)

Ar

23.

Select the formula for iron(III) silicate

:

a)

Fe2(SiO3)3

b)

Na2SiO3

c)

FeSO4

d)

FeSiO3

24.

Molar mass is

…

a)

the mass of a single mole of a substance that binds two quantities mass and quantity of a substance;

b)

the molar mass of the compound referred to 1/12 of the molar mass of the carbon atom -12;

c)

the molar mass of an atom assigned to 1/12 of the molar mass of a carbon atom -12;

d)

the amount of substance in the system that contains as many structural units (atoms, molecules) as the number of atoms contained in 0.012 kg of carbon -12.

25.

Hardness, ductility, malleability are:

a)

physical properties;

b)

chemical properties;

c)

complex substances;

d)

physical bodies.

26.

Formula of lithium carbonate:

a)

Li2CO3

b)

Li2SiO3

c)

Li2SO4

d)

Li2SO3

27.

With the sulfuric acid solution does not react

:

a)

P2O5

b)

Adon

c)

CuO

d)

BaCI2

28.

Oxygen-free acid is

:

a)

hydrogen chloride

b)

Silicon

c)

Coal

d)

phosphoric.

29.

Reactions in which two or more substances form one complex

:

a)

the connection;

b)

decomposition;

c)

exchange;

d)

polymerization.

30.

The reaction of the exchange decomposition of the substance with water:

a)

hydrolysis

b)

exchange rate;

c)

Ion

d)

connected.

31.

The relationship that occurs between atoms due to the formation of shared electron pairs:

a)

Covalent

b)

Hydrogen

c)

Metal

d)

Ion

32.

Simple substance:

a)

into hydrogen;

b)

Water

c)

Soda

d)

carbon dioxide.

33.

he qualitative composition is:

a)

the combination of chemical elements and (or) atomic groups that make up this chemical;

b)

substances composed of 2 or more chemical elements

c)

Indicators that characterize the number or number of atoms of a chemical element and (or) atomic groups that form this chemical;

d)

the ability of atoms of one chemical element to combine with a strictly defined number of atoms of another chemical element.

34.

Suspension is

a)

coarse-dispersed systems with a solid dispersed phase and a liquid dispersed medium.

b)

mixtures in which particles of their constituent substances are visible to the naked eye or under a microscope;

c)

mixtures in which the particles of their constituent substances are not distinguishable even in the most powerful microscope

d)

asubstance that is distributed in another;

35.

Select the formula of the oxide

a)

CuO

b)

H2SO4

c)

NaOH

d)

HCI

36.

The ionic bond characteristic of:

a)

CuO

b)

H2

c)

Na

d)

HCI

37.

Complex substances are:

a)

substances consisting of 2 or more chemical elements;

b)

the combination of chemical elements and (or) atomic groups that make up this chemical;

c)

Indicators that characterize the number or number of atoms of a chemical element and (or) atomic groups that form this chemical.

d)

the ability of atoms of one chemical element to combine with a strictly defined number of atoms of another chemical element.

38.

Graphite crystal lattice

a)

Nuclear power

b)

Ionic

c)

Molecular

d)

Metal

39.

Coarse-dispersed systems include:

a)

Suspension

b)

Solution

c)

The Sol

d)

Gel

40.

Specify a pair of substances formed only by a covalent bond

.

a)

P205and P4

b)

CaC2and CO2

c)

O2and KF

d)

CaO and N2O5

41.

Orbitals that have a dumbbell-like shape are:

a)

p-orbitals;

b)

s-orbitals;

c)

d-orbitals;

d)

f-orbitals.

42.

Maximum number of electrons in p-orbitals:

a)

6

b)

2

c)

10

d)

14

43.

Products of interaction of hydrochloric acid and calcium oxide:

a)

CaCl2+ H2O;

b)

CaCl2 + H2↑;

c)

Cacl + H2↑;

d)

they do not interact.

44.

Mol is....

a)

the amount of a system substance that contains as many structural units (atoms, molecules) as there are atoms in 0.012 kg of carbon -12.

b)

the smallest particle of a substance that has its basic properties and is capable of independent existence;

c)

the smallest particle of a chemical element that has the same charge of the nucleus and has inherent chemical properties;

d)

a physical quantity characterized by the number of structural particles contained in a given system;

45.

Substance is what is made up of

:

a)

physical bodies;

b)

Gases

c)

In atom

d)

Molecules

46.

The reaction products of nitric acid and of potassium oxide

:

a)

KNO3+H2O

b)

KN03+H2

c)

CA(NO3)2+H2

d)

they do not interact.

47.

In the reaction with hydrochloric acid takes:

a)

sodium hydroxide

b)

carbon monoxide (IV);

c)

Copper

d)

silicic acid;

48.

Specify the formula of the oxide that corresponds to nitric acid:

a)

N2O5

b)

N2O3

c)

NO2

d)

NO

49.

Substances that delay the rate of chemical reactio

n

a)

inhibitors

b)

catalysts;

c)

enzymes;

d)

catalysis;

50.

Substances whose solutions have electrical conductivity:

a)

electrolytes;

b)

hydrates.

c)

the solvates;

d)

non-electrolytes;

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