Atom

What does a atom have?

• electrons

• electrons,neutrons and protons

• electrons and neutrons

• electrons,neutrons,protons and a nucleus

About charges of electrons,neutrons and protons

• electrons have a positive charge neutrons have a negative charge and protons dont have a charge

• Electrons dont have a charge neutrons have a negative charge and protons uave a positive charge

• electrons have a negative charge neutrons have a positive charge and a proton have a negative charge

• Neutrons have a negative charge electrons dont have a charge and a proton have a positive charge

What is 10×10?

• 100

• 356

• 211

• 121

What is 192 rounded up to the nearest hundred?

• 2000

• 354

• 780

• 200

What 7×8+45?

• 101

• 201

• 554

• 609

What is 2×24+67-28?

• 88

• 87

• 90

• 39

What is 7×2?

• 7

• 9

• 8

• 5

What does protons include? in quarks

• 3× up quarks

• 2× up quarks 1× down quarks

• 3×down quarks

• 2×down quarks 1× up quarks

What does neutrons have? In quarks

• 2×up quarks 1× down quarks

• 3× down quarks

• 3× up quarks

• 2× down quarks 1× up quarks

What number does hydrogen belong in the periodic table?

• 1

• 5

• 3

• 4