Physical Sci Review (end of quarter)

Which is a correctly balanced chemical equation?

• K₂CO₃ + BaCl₂ → KCl + BaCO₃

• K₂CO₃ + BaCl₂ → 2KCl + BaCO₃

• K₂CO₃ + 2BaCl₂ → 2KCl + BaCO₃

• K₂CO₃ + 2BaCl₂ → KCl + 2BaCO₃

Tags

NGSS.MS-PS1-5

The total number of oxygen atoms in the compound K₃PO₄ is:

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

Which of the following is ordered from smallest to largest?

• Compound, element, atom

• Element, atom, compound

• Atom, element, compound

• Element, compound, atom

Balance the following chemical equation: NaCl → Na + Cl₂. What will be the coefficient in front of NaCl when it is balanced?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Neon is located in which group?

• 11

• 10

• 17

• 18

There are ___ millimeters(mm) in 2.7 centimeters (cm)

• 270 mm
• .27 mm
• 27 mm
• .027 mm

What is an atom's nucleus made of?

• protons and neutrons
• only protons
• anodes
• only neutrons

The smallest unit of an element that maintains the properties of that element is a(n)

• atom.
• substance.
• molecule.
• compound.

The right side of this equation is called ________________.

• products

• reactants

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

What is energy?

• Something that takes up space.

• The ability to make something move or change.

• Anything that has mass.

Tags

NGSS.MS-PS3-5