RC 1 STAAR 2.0

An atom of lead (Pb) having an atomic mass of 207 has an atomic mass of 82. How many neutrons are present in this atom of lead. Type your answer.

Pick the 2 statements THAT correctly describe ELECTRONS.

• Electrons are located inside the nucleus and have a negative charge

• Electrons are located outside the nucleus and have a negative charge

• The number electrons in an atom is equal to the number of protons

• Electrons have the same mass as a proton

•   Electrons have the same mass as a neutron

Tags

NGSS.MS-PS2-5

Pick the 2 statements THAT correctly describe A FLUORINE ATOM.

• Fluorine atoms have 19 protons inside the nucleus 

• Fluorine atoms have 19 neutrons inside the nucleus

• Fluorine atoms have 19 particles inside the nucleus

• Fluorine atoms have 10 neutrons inside the nucleus

•   Fluorine atoms have 19 electrons outside the nucleus

Tags

NGSS.MS-PS1-1

Pick the 2 elements that have 6 NEUTRONS IN THE NUCLEUS OF their ATOM.

• 
• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Pick the 2 statements THAT ACCURATELY DESCRIBE THE ATOMS OF A SPECIFIC ELEMENT.

• A Phosphorus, P, atom has 15 protons inside the nucleus and 16 neutrons inside the nucleus.

• A Beryllium, Be, atom has 9 protons inside the nucleus and 4 neutrons outside the nucleus.

• A Chlorine,Cl, atom has 17 protons inside the nucleus and 17 neutrons inside the nucleus.

• A Carbon, C, atom has 12 protons inside the nucleus and 12 electrons outside the nucleus.

• A Sodium, Na, atom has 11 protons inside the nucleus and 11 electrons outside the nucleus.

Tags

NGSS.MS-PS1-1

Pick 2 statements THAT ACCURATELY DESCRIBE THE ATOMS OF A SPECIFIC ELEMENT.

• A Phosphorus, P, atom has 15 protons inside the nucleus and 16 neutrons inside the nucleus.

• A Beryllium, Be, atom has 9 protons inside the nucleus and 4 neutrons outside the nucleus.

• A Chlorine,Cl, atom has 17 protons inside the nucleus and 17 neutrons inside the nucleus.

• A Carbon, C, atom has 12 protons inside the nucleus and 12 electrons outside the nucleus.

• A Sodium, Na, atom has 11 protons inside the nucleus and 11 electrons outside the nucleus.

Tags

NGSS.MS-PS1-1

WHICH 2 SUBATOMIC PARTICLES FIT THE DESCRIPTION BELOW:

Mass of 1 AMU

Located in the nucleus

• Proton

• Neutron

• Electron

• Electron Cloud

An atom is always ​ (a)   charged because There is an ​ ​ (b)   number of ​ (c)   and electrons in an atom.

• neutrally
• equal
• protons
• electrons
• positively
• negatively
• neutrons

There are ​ (a)   neutrons in the nucleus in an ARGON (Ar) atom. The number of neutrons is ​ (b)   to the mass number ​ (c)   the atomic number.

• 22
• equal
• minus
• 18
• 40
• unequal
• plus
• divided by

Match the following.

• Equal to the number of protons in an atom

• Electrons

• Has the same mass as a neutron 

• Proton Charge

• A positively charged subatomic particle

• Proton Mass

• Equal to the mass number minus the atomic number

• Neutrons

• Located in the nucleus with protons

• Neutron Location

Tags

NGSS.MS-PS1-1