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Chemistry Semester 1 Exam

Last updated over 3 years ago

42 questions

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Question 1

1.

Question 2

2.

Question 3

3.

Question 4

4.

Question 5

5.

Question 6

6.

What is the density of an object having a mass of 7.9 g and a volume of 37.15 cubic centimeters?

Question 7

7.

What is the volume of an object with a density of 9.09 g/cm3 and a mass of 542 g?

Question 8

8.

Question 9

9.

Question 10

10.

Question 11

11.

Question 12

12.

Question 13

13.

1

1

1

1

1

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1

1

1

Question 24

24.

Question 25

25.

Question 26

26.

Question 27

27.

Question 28

28.

Question 29

29.

Give the electron dot diagram for the element Iodine.

Question 30

30.

Give the electron configuration for a neutral atom of beryllium.

Question 31

31.

Question 32

32.

Question 33

33.

Question 34

34.

Question 35

35.

Which group of elements in the periodic table is known as the alkali metals ?

Question 36

36.

What is another name for column 17 elements?

Question 37

37.

Question 38

38.

Question 39

39.

Question 40

40.

Question 41

41.

Elements in groups 1A and 2A in the periodic table form positively charged ions by loss of electrons. What will be the charge on an atom, if it belongs to group 1A?

Question 42

42.

Elements in groups 5A, 6A and 7A in the periodic table form negatively charged ions by gain of electrons. What will be the charge on an atom, if it belongs to group 6A?

Which is the state of matter that has a definite shape and definite volume?

gas

liquid

solid

plasma

Which is the state change in which a gas becomes a liquid?

condensation

freezing

melting

sublimation

Which is the type of separation technique being demonstrated in the figure?

distillation

filtration

chromotography

crystallization

Which of the following substances is an element?

sugar

salt

iron

baking soda

Which is NOT a chemical change?

ingredients for a cake are stirred together

a piece of wood is burned

an egg is cooked

a bar of iron rusts

This radioactive particle has two protons and two neutrons.

beta

meson

gamma

alpha

Which subatomic particle has a negative charge?	

electron

proton

alpha particle

neutron

The particles that are found in the nucleus of an atom are ____.

protons and neutrons

electrons only

neutrons and electrons

protons and electrons

All atoms of the same element have the same ____.

mass numbers

number of neutrons

mass

number of protons

Isotopes of the same element have different ____.

atomic numbers

positions on the periodic table

mass numbers

chemical behavior

Who was the man who lived from 460B.C.–370B.C. and was among the first to suggest the idea of atoms?

Democritus

Dalton

Thomson

Atomos

Question 14

14.

Question 15

15.

Question 16

16.

Question 17

17.

Question 18

18.

Question 19

19.

Question 20

20.

Question 21

21.

Question 22

22.

Question 23

23.

Which of the following elements is a d-block element?

C

Cs

Cf

Cd

Cl

What is the next atomic orbital in the series 1s, 2s, 2p, 3s, 3p?

2d

3d

3f

4s

Which is the correct electron dot diagram for the element Silicon (Si)?

A

B

C

D

What is the electron configuration of potassium?

1s22s22p63s23p3

1s22s22p63s23p24s1

1s22s23s23p63d1

1s22s22p63s23p64s1

How many energy sublevels are in the second principal energy level?

2

4

1

3

What is another name for the representative elements?

Group C elements

Group B elements

Transition elements

Group A elements

Which of the following elements is in the same period as phosphorus?

nitrogen

oxygen

carbon

magnesium

Of the elements Pt, V, Li, and Kr, which is a nonmetal?

Pt

V

Li

Kr

Which of the following elements has the smallest atomic radius?

sulfur

selenium

bromine

chlorine

Which is described as the force holding two atoms together?

chemical bond

cation

lattice

formula unit

Which is the charge that results when oxygen becomes an ion?

-3

-2

+2

+3

What is the correct formula for the compound Manganese(III) fluoride?

Mn3F3

MnF3

Mn3F

MnF

What is the correct name for the compound Na3P?

sodium(III) phosphide

sodium phosphite

sodium phosphate

sodium phosphide