Unit Test Answers

What best describes the states of nonmetals when they are at room temperature?

Which metal is most likely to form more than one kind of positively charged ion?

Which element has an ion that is smaller than an ion of calcium?

Rutherford used positively charged particles to investigate the structure of the atom. The results surprised him, and he developed the atomic model shown below.

Which element is most likely to carry electric current easily?

While looking at bromine (Br) on the periodic table, a student needs to find another element with very similar chemical properties but with a different atomic mass. Which best describes the student’s options?

Calcium, magnesium, and strontium are near each other on the periodic table and have some characteristics in common, but they differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?

What best describes the states of nonmetals when they are at room temperature?

Which best describes the trends in electronegativity on the periodic table?

Which have different numbers of electrons?

The atomic number of beryllium (Be) is 4, and the atomic number of barium (Ba) is 56. Which comparison is best supported by this information?

Particle A has very little mass in comparison to Particle B. Both particles are in the same atom. Which is the best conclusion about Particles A and B?

Sonya is studying a nonmetal element. She learns that the element is like other elements in its group because it can bond to form a salt or an acid. She also learns that the element is the most reactive element in its group. Which element is Sonya most likely studying?

Which is the property of nonmetals to evaporate easily?

Where are alkaline earth metals found on the periodic table?

How does Rutherford’s model of the atom compare with Thomson’s model?

Which is most likely true about electronegativity?

Sonya is studying a nonmetal element. She learns that the element is like other elements in its group because it can bond to form a salt or an acid. She also learns that the element is the most reactive element in its group. Which element is Sonya most likely studying?

Which is the property of nonmetals to evaporate easily?

These models show the electron structures of two different nonmetal elements.

Which scientist believed that the probable, not exact, location of the electrons of an atom can be determined by using mathematics?

An atomic physicist determines that an atom is composed of 8 positively charged particles and has a mass of 15 amu. Which is the best conclusion that can be drawn?

This is how manganese appears in the periodic table.

Which best describes the trends in electronegativity on the periodic table?

What is an atomic nucleus?

Which scientist believed that the probable, not exact, location of the electrons of an atom can be determined by using mathematics?

Which metal is most likely to form more than one kind of positively charged ion?

Which is most likely true about electronegativity?

Rutherford used positively charged particles to investigate the structure of the atom. The results surprised him, and he developed the atomic model shown below.

Calcium, magnesium, and strontium are near each other on the periodic table and have some characteristics in common, but they differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?