Tutoring Quizizz

What can be concluded from the information provided?

• The nucleus contains protons and electrons

• The nucleus contains a positive charge

• The nucleus contains a negative charge

• The nucleus contains neutrons and electrons

An atom has 29 protons, 29 electrons, and 35 electrons. What is the mass number of the atom?

Which atom diagram has chemical properties most similar to carbon?

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Tags

NGSS.MS-PS1-1

Potassium (K), atomic number 19, will most likely react with-

• Sodium (Na), because it is in the same column

• Calcium (Ca), because it is in the same row

• Chlorine (Cl), because it is a nonmetal

• Argon (Ar), because it is a noble gas

Tags

NGSS.MS-PS1-5

Fluorine is a halogen and a nonmetal that is extremely toxic to humans. When combined with other elements it has many uses, including preventing tooth decay. Which information below identifies Fluorine (F)?

• 9 protons

• 9 neutrons

• 19 electrons

• 19 protons

Tags

NGSS.MS-PS1-1

Which of the following groups of elements are all malleable, conduct electricity and are lustrous?

• Cl, He, Ne

• Cu, Na, Mg

• Mg, Ar, B

• Si, As, Se

Which group of elements is least reactive?

• Alkali metals

• Alkaline earth metals

• Halogens

• Noble gases

Which element only has two valence electrons?

• Potassium (K)

• Sulfur (S)

• Magnesium (Mg)

• Neon (Ne)

An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the atom's nucleus?

• +25
• +30
• -25
• -30

Tags

NGSS.MS-PS1-1

A model of a beryllium atom is shown below. What types of particles are found in the atom's nucleus?

• Positively charged particles and negatively charged particles

• Negatively charged particles only

• Neutral particles and positively charged particles

• Positively charged particles only

Tags

NGSS.MS-PS1-1