Chemistry Final

Which category of elements have the property of being malleable and ductile?

• metals

• nonmetals

• metalloids

• gases

Which of these elements has 5 valence electrons?

• Arsenic (As)

• Boron (B)

• Rubidium (Rb)

• Vanadium (V)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element is the most metallic in the periodic table above?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

Which has a charge of +1?

• proton

• atom

• neutron

• electron

A compound has the formula X3Y. For every 15 X atoms present in this compound, how many Y atoms are there?

• 15

• 3

• 45

• 5

Tags

NGSS.MS-PS1-1

Which region contains the alkaline earth metal family of elements, in the periodic table above?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

How many total atoms are in 3Na2SO4?

• 24

• 10

• 18

• 21

Tags

NGSS.MS-PS1-1

All of the following will form a diatomic molecule except

• Boron

• Fluorine

• Nitrogen

• Bromine

In this reaction, all of the following factors will change the concentration of CO2 in this reaction except

• H2O(g)

• CO(g)

• H2(g)

• CO2(g)

Tags

NGSS.HS-PS1-5

What are the correct coefficients when this equation is balanced? Sb + O₂ → Sb₂O₆

• 10, 5, 1

• 4, 3, 1

• 4, 6, 1

• 1, 2, 10