Science Quiz Nature of Matter

The diagram below shows a tall beaker with four different liquids and their densities. If a ball that has a density of 1.73 g/cm³ is placed in the beaker, where will the ball come to rest?

• on top of liquid A

• between liquids B and C

• between liquids C and D

• on the bottom of the beaker

Tags

NGSS.MS-PS1-2

The identifying characteristic of an element is its number of

• protons.

• neutrons.

• electrons.

• orbitals.

Which graph best represents the relative distance between the particles of most substances in their solid, liquid, and gas states?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-4

When an atom gains or loses neutrons, it becomes

• more stable.

• an isotope.

• an ion.

• less charged.

A model of an atom includes red marbles for electrons, green marbles for protons, and blue marbles for neutrons. All marbles have a radius of 2 cm. How could the model be changed to represent more properties of an atom?

• by using smaller marbles to represent electrons

• by using two marbles to represent each neutron

• by using two differently colored marbles for protons

• by switching the colors of the marbles

Tags

NGSS.MS-PS1-1

Which statement best explains why most of the mass of an atom is contained in the relatively small nucleus?

• Atoms are composed of less dense subunits than the nucleus.

• Protons and neutrons have more mass than electrons.

• Electrons have a negative charge and protons have a positive charge.

• Atoms are composed of mostly empty space.

Which of these describes a chemical property?

• the color of the substance

• the hardness of the substance

• how the substance behaves in the presence of an acid

• how the substance behaves in the presence of a magnet

Four spaces on the table have been labeled a, b, c, and d. Information for the element lead (Pb) is shown below. In which labeled space on the portion of the table should the element lead (Pb) be placed?

• A

• B

• C

• D

The diagram below represents a portion of the Periodic Table of the Elements. Based on its position in the Periodic Table, at room temperature, cadmium is most likely a

• metal

• nonmetal

• metalloid

• noble gas

The element sodium (Na) has an atomic number of 11 and an atomic mass of 23.0 atomic mass units (amu). Which of these elements is most likely to have similar chemical reactivity as sodium?

• neon, Ne, which has a similar symbol

• magnesium, Mg, which has an atomic mass of 24.3 amu

• aluminum, Al, which is in the same period on the periodic table

• potassium, K, which is in the same group on the periodic table