IA #2 Retest

Which statement pair of statements correctly compare metal and nonmetals?

• Metals tend to be good conductors of thermal energy.

  Nonmetals tend to be poor conductors of thermal energy.

• Metals are dull and brittle.

  Nonmetals are shiny and malleable.

• Metals are poor conductors of electricity.

  Nonmetals are malleable.

• Metals cannot be stretched into thin wires.

  Nonmetals can be stretched into thin wires.

Which statement accurately describes the atoms of a specific element?

• An indium, In, atom contains 115 protons inside the the nucleus and 49 neutrons outside the nucleus.

• A scandium, Sc, atom contains 45 electrons outside the nucleus and 21 neutrons inside the nucleus.

• An aluminum, Al, atom contains 27 electrons and 27 protons inside the the nucleus.

• A zinc, Zn, atom contains 30 protons inside the nucleus and 30 electrons outside the nucleus.

Tags

NGSS.MS-PS1-1

In this model, which particle determines the reactivity of this atom?

• Particle W

• Particle X

• Particle Y

• Particle Z

Tags

NGSS.MS-PS1-1

Which process describes only a physical change?

• Process 1

• Process 2

• Process 3

• Process 4

Which substance listed in the chart is made up of the most atoms?

• Carbonic acid

• Nitric acid

• Phosphoric acid

• Sulfuric acid

Tags

NGSS.MS-PS1-1

What mass of calcium carbonate, to the nearest hundredth of a gram (2 decimal places), is decomposed in this reaction?

Mathematical Equivalence

ON

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which ecosystem would be more likely to survive if a disease killed the grasses?

• The forest ecosystem, because most of the animals can ear other organisms.

• The grassland ecosystem, because several predators compete for food.

• The forest ecosystem, because it has three top predators.

• The grassland ecosystem, because it has many herbivores.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Some students take care of a vegetable garden. When it is time to plant in the spring, the students leave part of the garden empty in order to observe ecological succession. Which of these will most likely occur first?

• Development of topsoil

• Growth of weeds and grasses

• Growth of trees and shrubs

• Development of a stream

Species Z can successfully share the same environment with the other plants shown because species Z absorbs water-

• found deep underground, and species X absorbs water near the surface

• found deep underground, and species X absorbs water found deep underground

• near the surface, and species Y absorbs water near the soil surface

• near the surface, and species Y absorbs water found deep underground

Tags

NGSS.MS-LS2-1

A cross Timbers rancher is concerned about competition between the ranch animals and deer. Based on the graph, which ranch animals compete for the most food with white-tail deer?

• Cattle that eat grass and feed

• Goats that eat weeds and shrubs

• Turkeys that eat seeds and fruit

• Hogs that eat fruit, seeds, and feed.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4