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2nd Sem Chemistry Study Questions

Total questions: 50

Worksheet time: 50mins

Name
Class
Date
1.
If an atom becomes an ion with a 2+ charge, what does that mean?
a)
It has lost 2 electrons
b)
It has gained 2 electrons
c)
The atom is in period 2
d)
The atom has an atomic # of 2
2.
How do the following two elements bond together?
Cr3+  O2-         
a)
CrO
b)
Cr3O2
c)
Cr2O3
d)
CrO3
3.
What is the formula for copper(I) sulfate?
a)
Cu(SO3)
b)
Cu(SO4)
c)
Cu2(SO3)
d)
Cu2(SO4)
4.
What is the formula for sodium nitrate?
a)
Na3(NO)
b)
Na(NO)
c)
Na3(NO3)
d)
Na(NO3)
5.
Which of the following is an example of an IONIC COMPOUND?
a)
NaCl
b)
H2O
c)
CO2
d)
NO
6.
Which of the following is a characteristic property of ionic compounds?
a)
They form hard, brittle crystals with characteristic shapes
b)
They have low melting points
c)
They have low boiling points
d)
They contain no charged particles
7.
In what form can an ionic compound conduct electricity?
a)
when dissolved in water
b)
as a solid
c)
as a crystal
d)
when warmed slightly
8.
The chemical formula of carbon tetrachloride is
a)
CCl
b)
C₄Cl
c)
CCl₄
d)
C(IV)Cl
9.

The chemical formula of dinitrogen tetraoxide is

a)
Ni₂O₄
b)
NiO
c)
N₂O₄
d)
NiO₂
10.

The name of FeCl₂ is

a)

iron chloride

b)

iron (II) chloride

c)

iron (I) chloride

d)

iron dichloride

11.

Name for LiOH

a)

lithium hydrogen oxide

b)

lithium hydroxide

c)

lithium (II) hydroxide

d)

lithium (I) hydroxide

12.

What is the formula for nitric acid?

a)

HNO2

b)

HNO3

c)

HNO4

d)

H2NO3

13.

What is the formula for hydrochloric acid?

a)

HCl

b)

HClO

c)

H3ClO3

d)

HClO3

14.

Name this acid: HNO2

a)

hydronitrous acid

b)

hydrogen nitrogen oxygen

c)

nitrous acid

d)

hyponitrous acid

15.
A dark spot on the photosphere of the sun
a)
corona
b)
solar flare
c)
sunspot
d)
magnitude
16.
The outermost layer of the Sun's atmosphere
a)
Photospher
b)
Corona
c)
Sunspot
d)
Solar Flare
17.
Sudden, intense explosions that result in changes in brightness when magnetic energy is released.
a)
Prominences
b)
Solar Flare
c)
Sunspot
d)
Photosphere
18.
Bright arch-like loops that may erupt from the photosphere into the corona
a)
Sunspots
b)
Solar Flares
c)
Prominences
d)
Photosphere
19.
These colored bands of light in the sky are called ___.
a)
auroras
b)
solar flares
c)
solar prominences
d)
sun spots
20.
Where does nuclear fusion occur?
a)
Space
b)
Radiation Zone
c)
Photosphere
d)
The Core
21.
In which area of the sun does gas rise as it heats up, then fall back down as it cools?
a)
the core
b)
the radiation zone
c)
the convection zone
d)
the corona
22.

Why is the ozone layer important?

a)

it allows us to use radios

b)

it protects us from meteors

c)

it is where weather takes place

d)

it protects us from harmful UV rays

23.

What is the name for the process that the core of the Sun undertakes in which hydrogen nuclei combine to create helium?

a)

Nuclear Fission

b)

Nuclear Fiction

c)

Nuclear Fusion

d)

Nuclear Function

24.

True or False: Sunspots usually come in pairs.

a)

True

b)

False

25.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1023
b)
146
c)
4.15
d)
1.51x1024
26.
How many molecules of sugar (C6H12O6) are in a mole?
a)
24 molecules
b)
180 molecules
c)
180 g
d)
6.02 x 1023 molecules
27.

What is the mass of one mole of silver?

a)

32.06 g

b)

107.87 g

c)

14.01 g

d)

22.99 g

28.

How many molecules of water are in a 821.3 g sample?

a)

45.58 molecules

b)

8.232 x 1025 molecules

c)

8.909 x 1027 molecules

d)

2.744 x 1025 molecules

29.

At STP, 1 mol of gas has a volume of

a)

34L

b)

22.4L

c)

60L

d)

0.6L

30.

How many Na atoms are present in this compound? 5Na3PO4

a)
5
b)

8

c)

15

d)

20

31.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma 
d)
none
32.
Takes two small nuclei and combines them into a larger nucleus
a)
fission
b)
fusion
33.
The splitting of a nucleus into smaller nuclei is
a)
fusion
b)
fission
c)
half-life
d)
gamma radiation
34.
What particle completes this reaction?
a)
alpha particle
b)
beta particle
c)
gamma particle
d)
neutron
35.
The three types of nuclear radiation in increasing order of penetrating power are ____.  
a)
  alpha, beta, gamma 
b)
X ray, beta, gamma
c)
alpha, gamma, beta 
d)
X ray, gamma, beta 
36.

Which is the missing isotope that will balance the following nuclear equation?

94Be + 11H → _____ + 42He

a)

105B

b)

105Ne

c)

63Li

d)

63C

37.

Which of the following nuclear emissions is only energy?

a)

Alpha particle

b)

Beta particle

c)

Gamma ray

38.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
39.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
40.
Has the symbol
a)
Alpha
b)
Beta 
c)
Gamma
41.

Which part of the female reproductive system is the site of fertilization?

a)

Uterus

b)

Fallopian tube

c)

Ovary

d)

Cervix

42.

What is the main reproductive organ in males? What hormone does it secrete?

a)

Testes: Oestrogen

b)

Testes: Testosterone

c)

Ovaries: Oestrogen

d)

Ovaries: Testosterone

43.

What is the periodic shedding of tissues and blood from the inner lining of the

uterus?

a)

menopause

b)

ovulation

c)

pregnancy

d)

menstruation

44.

It is the hormone secreted by the ovaries and responsible for the development of secondary sex characteristics in females such as the widening of hips and development of breasts.

a)

estrogen

b)

progesterone

c)

testosterone

d)

inhibin

45.

What type of contraceptive method involves surgically blocking or sealing the fallopian tubes?

a)

a) Tubal ligation, also known as "getting your tubes tied."

b)

b) The intrauterine device (IUD)

c)

c) The contraceptive implant

d)

d) The contraceptive patch

46.

What type of contraceptive method involves inserting a small, T-shaped device into the uterus to prevent pregnancy?

a)

a) The contraceptive pill

b)

b) The diaphragm

c)

c) The contraceptive patch

d)

d) The intrauterine device (IUD)

47.

What type of contraceptive method involves a permanent form of contraception for men, where the tubes that carry sperm are blocked or cut?

a)

a) Vasectomy

b)

b) The intrauterine device (IUD)

c)

c) The contraceptive patch

d)

d) The contraceptive injection

48.

The combining of a sperm cell and an egg cell creates

a)

Zygote

b)

Umbilial cord

c)

uterus

d)

embryo

49.

women continually produce eggs throughout their life

a)

true

b)

false

50.

What is the human embryo called after the eighth week of development?

a)

An infant

b)

A zygote

c)

An embryo

d)

A fetus

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