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11 questions
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- Q1Webb is testing samples of different elements. One sample is a dull, yellow solid that breaks into powdery pieces when he hits it with a hammer. How should Webb classify the yellow solid?as a noble gasas a nonmetalas a metalloidas a metal30sSC.8.P.8.6
- Q2The periodic table has rows and columns that organize the elements by similarities. What is the name for a row in the periodic table?periodfamilysectiongroup30sSC.8.P.8.6
- Q3The prefix semi- means “partly.” Based on your knowledge of the properties of elements, which kind of element is most likely used to make semiconductors?nonmetalsmetalsliquidsmetalloids30sSC.8.P.8.6
- Q4Why do the elements in group 16 share similar chemical properties?These elements all have the same atomic number.These elements' atoms have the same number of valence electrons.These elements are found in the same period.These are all nonmetals.30sSC.8.P.8.6
- Q5Atoms of different elements can join together in different arrangements to produce a variety of substances that are found on Earth. There are more than 100 known elements. Which of the following best describes these elements?Most of the elements are metalloids.Most of the elements are nonmetals.Most of the elements are metals.Most of the elements are noble gases.30sSC.8.P.8.6
- Q6What is true about the position of any metal on the periodic table?It is to the left of the zigzag line.It is in the last group.It is to the right of the zigzag line.It is in the first group.30sSC.8.P.8.6
- Q7Which two elements are most likely to have similar properties?cesium (Cs) and osmium (Os)sodium (Na) and calcium (Ca)lithium (Li) and potassium (K)rubidium (Rb) and strontium (Sr)30sSC.8.P.8.6
- Q8A neutral atom has 6 total electrons. Which statement is true?It has 4 valence electrons and is in group 6A.It has 6 valence electrons and is in group 6A.It has 6 valence electrons and is in group 4A.It has 4 valence electrons and is in group 4A.30sSC.8.P.8.6
- Q9Based on vanadium's (V) location on the periodic table, which of the following would be describe its physical properties?Brittle, dull, and has a low melting point.Ductile, dull, and has a high melting point.Brittle, shiny, and has a low melting point.Ductile, shiny, and has a high melting point.30sSC.8.P.8.6
- Q10An atom's atomic number is 50 and it has a mass number of 120. How many neutrons does this atom have?507017012030sSC.8.P.8.7
- Q11Marcus wants to use two objects to compare the size of a proton and an electron. If he uses a basketball for a proton, which object would best represent an electron?a beach balla soccer balla peaa bowling ball30sSC.8.P.8.7