Core 6 Quarter 3 Test Review

Several conditions influence how much oxygen will be dissolved in water. The table shows some of these conditions. Toxic chemicals from a spill flow down a river to the ocean and kil most of the grasses in an estuary. What will most likely happen in the ecosystem?

• Photosynthesis will decrease, decay will decrease, and so dissolved oxygen will increase

• Photosynthesis will increase, decay wil increase, and so dissolved oxygen will decrease

• Photosynthesis will decrease, decay will increase, and so dissolved oxygen will decrease.

• Photosynthesis will increase, decay will decrease, and so oxygen will increase.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS1-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which subatomic particle has a positive charge?

• proton

• nuetron

• electron

• atom

Tags

NGSS.MS-PS1-1

Which subatomic particle has a negative charge?

• proton

• neutron

• electron

• atom

Tags

NGSS.MS-PS1-1

Why is the overall charge of an atom neutral (0)?

• They have the same number of protons and neutrons.

• They have the same number of protons and electrons.

• They have the same number of electrons and neutrons.

Tags

NGSS.MS-PS1-1

what does the 6 represent?

• Atomic mass
• atomic number
• chemical symbol
• element name

Tags

NGSS.MS-PS1-1

Which contains a solid? (Choose all)

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Which contains only elements?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Which of the labeled structures is a proton?

• a

• b

• c

Tags

NGSS.MS-PS1-1

Atomic weight

• number of protons and neutrons inside the nucleus

• number or electrons or protons

• number of protons, neutrons and electrons

The smallest particle into which an element can be divided and still be the same element is a(n)

• proton

• neutron

• electron

• atom

Tags

NGSS.MS-PS1-1