Nuclear Decay

Alpha particles.....

• a) are positively charged.
• b) consist of two protons and four neutrons.
• c) can penetrate any thickness of matter
• d) All of the above 

Tags

NGSS.HS-PS1-8

During beta decay, a nucleus .... 

• gives up two protons and two neutrons.
•   maintains the same number of protons and neutrons.
•   loses a proton and gains a neutron.
• gains a proton and loses a neutron. 

Tags

NGSS.HS-PS1-8

Radioactive materials have unstable...

• electrons
• protons
• nuclei
• neutrons

Tags

NGSS.HS-PS1-8

A helium nucleus with two protons and two neutrons is called a(n) ____.  

• alpha particle
• electroscope
• beta particle
• gamma ray

Tags

NGSS.HS-PS1-8

Negatively charged particles emitted from a nucleus at a high speed are ____.  

• alpha particle
• gamma rays
• beta particles
• X rays

Tags

NGSS.HS-PS1-8

In alpha decay, the mass number...

• increases by 2

• decreases by 2

• increases by 4

• decreases by 4

Tags

NGSS.HS-PS1-8

In alpha decay, the atomic number...

• increases by 2

• decreases by 2

• increases by 4

• decreases by 4

Tags

NGSS.HS-PS1-8

The mass number of Neptunium (Np) is _____.

Tags

NGSS.HS-PS1-8

The atomic number of Neptunium (Np) is _____.

Tags

NGSS.HS-PS1-1

Solve this equation for alpha decay.
₈₅²⁰⁹At = ___ + ₂⁴He

• ₈₃²⁰⁵Bi
• ₈₆²⁰⁹Rn
• ₈₁²⁰⁷Tl
• ₈₅²⁰⁸At

Tags

NGSS.HS-PS1-8