Chemistry Semester 01 Final (Part Two)

How much heat is required to increase the temperature of 150g of iron from 20°C to 150°C?

• 9,450 J

• 6,930 J

• 8,700 J

• 12,600 J

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How much heat is needed to raise 200 g of water by 10°C?

• 8,360 J

• 4,180 J

• 20,900 J

• 2,090 J

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which method transfers heat through direct contact?

• Radiation

• Conduction

• Convection

• Insulation

What is the charge of a proton?

• Positive

• Negative

• Neutral

• It depends on the atom

Where are electrons located in an atom?

• Inside the nucleus

• Orbiting the nucleus in energy levels

• In between the nucleus and outer shell

• Scattered randomly inside the atom

What is the atomic mass of an element with 8 protons, 8 neutrons, and 8 electrons?

• 8

• 16

• 24

• 32

Tags

NGSS.MS-PS1-1

What determines the identity of an element?

• The number of protons in the nucleus

• The number of neutrons in the nucleus

• The number of electrons in the outer shell

• The atomic mass

During a science class, Ava learned about atoms and their components. Her teacher explained that some atoms of the same element can have different numbers of neutrons. What is this type of atom called?

• An ion

• An atom

• An isotope

• A charged nucleus

Which particle has almost no mass?

• Proton

• Neutron

• Electron

• All have the same mass

What happens to an atom if it gains an electron?

• It becomes positively charged

• It becomes negatively charged

• It becomes neutral

• It does not change