Chemistry Retest Review!

In the atom diagram shown, E is pointing to

• An electron
• a proton
• a neutron
• the nucleus

Tags

NGSS.MS-PS1-1

Which of the following is found in the nucleus of an atom?

• electrons
• neutrons
• The center of an atom, composed of protons and neutrons
• molecules

Which is a finding attributed to Rutherford's Gold Foil Experiment?

• atoms are indivisible and have a dense positive nucleus.

• atoms are divisible and have multiple layers of electrons scattered uniformly about the atom.

• atoms are like plum pudding with positive and negative charges uniformly scattered throughout the atom.

• atoms are mostly empty space with a dense positive nucleus.

Tags

NGSS.HS-PS1-8

Which description about the proton is accurate?

• Positively charged particle with a mass less than 0 amu
• A neutrally charged particle with a mass less than 0 amu
• Positively charged particle with a mass of 1 amu
• A neutrally charge particle with a mass of 1 amu

Tags

NGSS.MS-PS1-1

What is the charge of the neutron?

• Negative
• Positive
• electrical charge
• Neutral (no charge)

What is the mass of a neutron?

• 1 amu
• 0 amu
• same as electron
• doesn't have any mass

If an atom is neutral, which two subatomic particles are equal?

• protons and neutrons

• protons and electrons

• electrons and neutrons

True or False:

If a chemical equation is following the law of conservation of mass, then it is unbalanced.

• True

• False

Tags

NGSS.MS-PS1-5

If an atom has similar chemical properties to another atom, what do they have in common?

• protons

• valence electrons

• energy levels

• neutrons

Total mass before a chemical reaction is the same as the mass after the chemical reaction is

• law of conservation of mass
• reactant
• product
• yield

Tags

NGSS.MS-PS1-5