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Convert 560 grams to kilograms. What is 0.56 kg? Back to you Alex
What type of bond occurs when the force of attraction is between the nuclei of atoms and the electrons they share? What is covalent? Back to you Alex
What is 100 degrees Celcius? At what temperature does water boil in the metric system? What is 100 degrees Celcius? Back to you Alex
In this Bohr model, what is the atomic number? 11 p+ 11 no Back to you Alex
What is between the metals and nonmetals? Where are the metalloids found on the periodic table? What is between the metals and nonmetals? Back to you Alex
The number of protons in a neutral atom ______ the number of ______? What are equals and electrons? Back to you Alex
Which of the following is a nonmetal? Ba, Na, Cu, O, Si What is O? Back to you Alex
What is the charge of aluminum if it has 13 protons and 10 electrons? Back to you Alex
In Ernest Rutherford’s gold foil experiment, most positively charged particles passed through the foil, but a few particles were deflected strongly. From this result, he developed what idea about the atom? The nucleus of an atom is clustered in a tiny region in its center, called the nucleus? It is mostly empty space. Back to you Alex
Which of the following elements are halogens? Br, Ne, B, I, O, Na, S What are Br and I? Back to you Alex
How many neutrons does Potassium-39 have? What is 20? Back to you Alex
What is a complete set (8)? Atoms of one group of nonmetals, the noble gases, have this many electrons in their outermost energy level. What is a complete set (8)? Back to you Alex
What is the element in group 15, period 4 (Sb = 52)? Of the following, which has more protons? Element in group 2 and period 3 Element in group 12 and period 4 Element in group 15 and period 4 What is the element in group 15, period 4 (Sb = 52)? Back to you Alex
What is the smallest part of an element that still has all chemical properties of that element? What is an atom? Back to you Alex
The second energy level can hold up this many electrons. What is 8? Back to you Alex
This element is a gas at room temperature, and its atoms have six electrons in their outer level. What is oxygen? Back to you Alex
What is Li (only 1 valence electron)? Based on the number of valence electrons, which of the following is the most reactive? Li, Be, B, Ne What is Li (only 1 valence electron)? Back to you Alex
An atom’s identity is determined by which subatomic particle? What is the proton? Back to you Alex
In a group on the periodic table, what generally happens to atomic radius? (size of the atoms) What is the get larger? Back to you Alex
Why do elements in a family or group in the periodic table often share similar properties? What is they have the same number of electrons in their outer energy level? Back to you Alex
Which element has a full outer energy level with only 2 electrons? What is Helium? Back to you Alex
Oxygen is in Group 16. How many valence electrons does oxygen have? What is 6? Back to you Alex
Which of the following elements tends to gain electrons and form negative ions? Li, Ba, O, C What is Oxygen? Back to you Alex
This Greek philosopher gave us the name “atom.” Who is Democritus? Back to you Alex
In a controlled experiment, a single factor is changed in one setup, but no change is made in the other setup. What is the factor that was changed? What is a variable? Back to you Alex
Which pair of atoms will form an ionic bond Which pair of atoms will form an ionic bond? Li and Cu, Mg and Cl, or O and N What are Mg and Cl? Back to you Alex
Which subatomic particle is the most important in determining how an atom will bond? What is the electron? Back to you Alex
Which element is in the same period as Calcium (Ca) and the same group as Chlorine (Cl)? What is Br? Back to you Alex
What is the atomic mass of Magnesium? Use the periodic table. Back to you Alex
How much water is in this container? What is 24 mL ? Back to you Alex