Quiz about Science Form 3_Chap 8.1 & 8.2

Question 1

Who invented X - Rays?

Accepted Answer

Wilhelm Conrad Roentgen

Answer

Donald Trump

Answer

Louis Pasteur

Answer

Thomas Jefferson

Question 2

The commonality between Becquerel and the Curies is their work with:

Accepted Answer

uranium

Answer

radium

Answer

polonium

Answer

cesium

Question 3

What new elements did Marie and Pierre Curie discover?

Accepted Answer

Radium and polonium

Answer

Uranium and polonium

Answer

Radium and uranium

Answer

Radium and thorium

Question 4

Which particles make up the nucleus of an atom?

Accepted Answer

protons and neutrons

Answer

electrons and protons

Answer

electrons, protons, and neutrons

Answer

electrons and neutrons

Question 5

What makes something radioactive?

Accepted Answer

an unstable nucleus

Answer

elements with an atomic number above 81

Answer

contaminated sewage

Answer

It decays over time

Question 6

_______________ is the process by which unstable atoms emit radiation until they become stable.

Accepted Answer

Radioactive Decay

Answer

Radiation

Answer

Chemical Reaction

Answer

Isotopes

Question 7

Which type of radiation releases an electron?

Accepted Answer

Beta radiation

Answer

Alpha radiation

Answer

Gamma radiation

Answer

Theta radiation

Question 8

What particle is released when an unstable isotope undergoes alpha radiation?

Accepted Answer

a helium nucleus

Answer

an electron

Answer

a photon of light

Answer

a neutron

Question 9

Which type of radioactive decay is occurring in this equation?

Accepted Answer

beta decay

Answer

Alpha decay

Answer

gamma decay

Answer

positron emission

Question 10

What type of decay is shown here

Accepted Answer

alpha decay

Answer

beta decay

Answer

gamma decay

Question 11

Finish this equation

²⁰⁹₈₃Bi-->_{_______ +}²⁰⁵₈₁Tl

Accepted Answer

42He

Answer

0-1e

Answer

y

Question 12

What is the symbol for an alpha particle?

Accepted Answer

42He

Answer

0-1e

Answer

0+1 e

Answer

10n

Question 13

When a nucleus undergoes nuclear decay by gamma rays, the atomic number of the element....

Accepted Answer

remains the same

Answer

decreases by one.

Answer

increases by one.

Answer

increases by two.

Question 14

What is Half-life?

Accepted Answer

The amount of time it takes for half the nuclei in a sample of the isotope to decay

Answer

The amount of time it takes for some of the nuclei in a sample of the isotope to decay

Answer

The amount of time it takes for half the electrons in a sample of the isotope to decay

Answer

the amount of time it takes to double the nuclei in a sample of the isotope to decay

Question 15

If the half life of a radioactive element is 100yrs, how long would it take for the radioactivity to reduce by one half?

Accepted Answer

100yrs

Answer

200yrs

Answer

50yrs

Answer

300yrs

Question 16

The half-life of Zn-71 is 2.4 minutes. If one had 100.0 g at the beginning, how many grams would be left after 7.2 minutes has elapsed?

Accepted Answer

12.5g

Answer

100.0g

Answer

50.0g

Answer

8.5g

Question 17

Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?

Accepted Answer

2.5g

Answer

0.25g

Answer

25g

Answer

80g

Question 18

How many protons does this isotope have?

Accepted Answer

53

Answer

131

Answer

184

Answer

78

Question 19

The half-life of an element is the time taken for....

Accepted Answer

half the nuclei of the given sample to decay

Answer

half of the radiation to be emitted

Answer

half the carbon-14 of a substance to be emitted

Question 20

What is the half-life of the isotope shown in the graph?

Accepted Answer

1 minute

Answer

3 minutes

Answer

5 minutes

Answer

6 minutes

Question 21

Which of the following is a positively charged subatomic particle found in the nucleus of an atom?

Accepted Answer

Proton

Answer

Electron

Answer

Neutron

Answer

Quark

Question 22

What carries no charge

Accepted Answer

Neutrons

Answer

Electrons

Answer

Protons

Question 23

An electron has a _____ charge.

Accepted Answer

negative

Answer

positive

Answer

neutral

Question 24

Ions are:

Accepted Answer

atoms with a positive or negative charge

Answer

atoms with no charge

Answer

atoms with ONLY a positive charge

Answer

atoms with ONLY a negative charge

Question 25

When an atom loses a valence electron, it becomes a(n) _____________ ion.

Accepted Answer

positive

Answer

negative

Answer

neutral

Answer

polyatomic

Question 26

Negative ions form when atoms _________ valence electrons.

Accepted Answer

gain

Answer

lose

Answer

share

Question 27

all matter is made of what

Accepted Answer

atoms

Answer

energy

Answer

electrons

Answer

compounds

Question 28

the central region of an atom where its neutrons and protons are is its

Accepted Answer

nucleus

Answer

electron cloud

Answer

core

Answer

center

Science Form 3_Chap 8.1 & 8.2

30 questions

Who was the first person to get radiographed ?

Who invented X - Rays?

The commonality between Becquerel and the Curies is their work with:

What new elements did Marie and Pierre Curie discover?

Which scientist’s discovery of mysterious radiation from uranium first sparked Marie Curie’s interest?

Which particles make up the nucleus of an atom?

What makes something radioactive?

_______________ is the process by which unstable atoms emit radiation until they become stable.

Which type of radiation releases an electron?

What particle is released when an unstable isotope undergoes alpha radiation?

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