Atoms - Mixtures and Pure Substances

What are the names of the particles in the nucleus?

• protons and neutrons
• protons and electrons
• photons and neutrons
• nucleons and protons

Tags

NGSS.MS-PS1-1

In the center of the atom is something called _____

• the kernel
• the cell
• the nucleus
• the focal point

Tags

NGSS.MS-PS1-1

Rutherford's gold foil experiment provided evidence that...

• negative and positive charges are spread evenly throughout the atom.
• alpha particles have a positive charge.
• gold is not a dense as previously thought.
• there is a dense positively charged nucleus at the center of an atom.

Tags

NGSS.MS-PS1-1

When positively charged particles were radiated onto a gold atom, a few of the particles bounced back. Which of the following caused this?

• Positively charged protons in the nucleus of the gold atom

• Positively charged electrons in the nucleus of the gold atom

• Positively charged electrons in the nucleus of the gold atom

Tags

NGSS.MS-PS1-1

NGSS.MS-PS2-5

What is the last outermost shell of an atom called?

• S Shell

• Valence Shell

• Purple Shell

Tags

NGSS.HS-PS1-1

What is given away or accepted by an atom when it reacts with other atoms?

• Proton

• Neutron

• Electron

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following explains how all compounds are created?

• By losing, gaining, or sharing electrons between other atoms.

• By creating and destroying protons of different atoms.

• By the combination of many atoms of only the same element.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

How many atoms of each element does potassium nitrate, KNO₃, contain?

• Potassium (K) = 1 atom, Nitrogen (N) = 3 atom, Oxygen (O) = 3 atoms

• Potassium (K) = 1 atom, Nitrogen (N) = 1 atom, Oxygen (O) = 3 atoms

• Potassium (K) = 3 atom, Nitrogen (N) = 3 atom, Oxygen (O) = 3 atoms

Tags

NGSS.MS-PS1-1

How many atoms of each element does sodium carbonate, Na₂CO₃, contain?

• Sodium (Na) = 1 atom, Carbon (C) = 1 atoms, Oxygen (O) = 3 atoms

• Sodium (Na) = 2 atoms, Carbon (C) = 1 atom, Oxygen (O) = 3 atoms

• Sodium (Na) = 2 atoms, Carbon (C) = 3 atom, Oxygen (O) = 3 atoms

Tags

NGSS.MS-PS1-1

Which of the following is formed when an acid reacts with a base?

• Salt

• Hydrogen ions

• Hydroxide ions

Tags

NGSS.MS-PS1-2