atoms and the periodic table

Which TWO of the following subatomic particles are inside the nucleus?

• protons

• electrons

• neutrons

• There are no subatomic particles in the nucleus of an atom.

Tags

NGSS.MS-PS1-1

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

Which of the two elements below have similar properties?

• Chlorine (Cl) and Zinc (Zn)

• Sodium (Na) and Fluorine (F)

• Potassium (K) and Francium (Fr)

• Magnesium (Mg) and Helium (He)

a positively-charged particle in the atoms nucleus

• proton

• neutron

• electron

Tags

NGSS.MS-PS1-1

Which label correctly identifies the nucleus of the atom?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

On the periodic table Li, Na, K and Rb are found in the same group because

• they have the same number of neutrons

• they have similar properties

• they have the same number of electrons

• they are compounds

Most of the elements on the periodic table are classified as _____.

• Metals
• Nonmetals
• Metalloids
• Periods

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

Sodium (Na) is found in group 

• 1
• 2
• 3
• 4