The Atom quiz #14 Flashcards
The Atom quiz #14
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How many electrons does a copper atom have? A neutral copper atom has 29 electrons. How are electrons arranged in an atom? Electrons are arranged in energy levels (shells) around the nucleus. Which is the amount of matter in an object? The amount of matter in an object is its mass. What makes a hydrogen atom different from a helium atom? Hydrogen has 1 proton; helium has 2 protons. How many naturally occurring elements exist? There are 92 naturally occurring elements. Which of the following particles would be repelled by a proton? Another proton would be repelled by a proton. How many electrons does potassium (K) contain? A neutral potassium atom has 19 electrons. What is the most common element found in the composition of minerals? Oxygen is the most common element in minerals. What is the smallest particle of an element that retains the chemical properties of that element? An atom is the smallest particle of an element that retains its chemical properties. How do you calculate the number of neutrons in an atom? Subtract the atomic number from the mass number to get the number of neutrons. What does the mass number consist of? The mass number is the sum of protons and neutrons in the nucleus. How many protons does krypton have? Krypton has 36 protons. How many neutrons does fluorine (F) have? Fluorine-19 has 10 neutrons (mass number 19 minus atomic number 9). Which number is used to identify an atom? The atomic number is used to identify an atom. What is the atomic number of a carbon atom that has 6 protons? The atomic number is 6. An atom has 23 protons and 29 neutrons. Which is the correct chemical symbol for this atom? The chemical symbol is V (vanadium). Which element has 6 protons? Carbon has 6 protons. Sand and computer chips share which element as their basic component? Silicon is the basic component of sand and computer chips. How many protons (p) are in an atom of sulfur? Sulfur has 16 protons. How many protons does terbium have? Terbium has 65 protons. What is the mass number for an atom of calcium containing 20 protons and 25 neutrons? The mass number is 45 (20 protons + 25 neutrons). How do the atomic mass and atomic number compare for helium? Helium's atomic number is 2; its most common atomic mass is 4. Which of the following is the fundamental unit of matter? The atom is the fundamental unit of matter. What is the smallest piece of an element that still has all of the properties of that element? An atom is the smallest piece of an element that retains its properties. Electrons do what around protons and neutrons? Electrons orbit around protons and neutrons in the nucleus. What is the difference between an element and a molecule? An element is made of one type of atom; a molecule is made of two or more atoms bonded together. Is gold an element? Yes, gold is an element. Which feature defines a neutral atom? A neutral atom has equal numbers of protons and electrons. How many electrons does a neutral Ba atom have? A neutral barium atom has 56 electrons. How many protons are in a nitrogen atom with a 3– charge? A nitrogen atom has 7 protons, regardless of charge. How many protons does an atom of carbon contain? Carbon has 6 protons. What of the following determines an atom’s identity? The number of protons determines an atom's identity. Which of the following statements about the particles in a material is true? Atoms are the basic particles that make up all materials. How many protons are in an atom of carbon? Carbon has 6 protons. What is the difference between atomic number and mass number? Atomic number is the number of protons; mass number is the sum of protons and neutrons. What is the number of protons in this carbon atom? A carbon atom has 6 protons. How are the atomic number and the number of protons related to each other? The atomic number equals the number of protons in the nucleus. Which substance is composed of only one type of atom? An element is composed of only one type of atom. Where does an element take its identity from? An element's identity comes from its number of protons. A neutral atom of astatine would have how many electrons? A neutral astatine atom has 85 electrons.
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