Chemistry Units 1-3 Review Study Guide

Who arranged the elements according to atomic mass & used the arrangement to predict the properties of missing elements?

To what category of elements does an element belong if it is a poor conductor of electricity?

Which is the state of matter shown in this figure?

What is the maximum number of f orbitals in any single energy level in an atom?

Which precaution should you take when you see this safety symbol?

The smallest particle of an element that retains the properties of that element is a(n) ____.

Separating a solid from a liquid by evaporating the liquid is called ____.

Which of the following elements is a metal?

When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?

According to the aufbau principle, ____.

How many individual atoms make up one unit of aluminum chloride, AlCl₃?

The closeness of a measurement to its true value is a measure of its ____.

Which is a compound?

In Bohr's model of the atom, where are the electrons and protons located?

What is the charge on the strontium ion?

Which is the type of separation technique being demonstrated in the figure?

Which scientist developed the model of the atom from the gold foil experiment?

The octet rule states that, in chemical compounds, atoms tend to have ____.

Which scientist developed the "plum pudding" model of the atom?

Which of the following substances is an element?

Which element has the electron configuration 1s²2s²2p⁶3s²3p⁶4s²3d⁴?

How many neutrons are in an atom of chloride?

According to the Law of Conservation of Mass, in any chemical change

Isotopes of the same element have different ____.

Which scientist first arranged elements by atomic number?

Density is found by dividing ____.

Dalton's atomic theory included which idea?

What is the charge of a cation?

When Group 2A elements form ions, they ____.

If the spin of one electron in an orbital is clockwise, what is the spin of the other electron in that orbital?

Which scientist developed the quantum mechanical model of the atom?

Each period in the periodic table corresponds to ____.

The modern periodic table is arranged in order of increasing atomic ____.

Who was the man who lived from 460B.C.–370B.C. and was among the first to suggest the idea of atoms?

Which is the correct number of valence electrons in the element Gallium (Ga)?

Which scientist described the existence of the neutron?

According to ____ periodic table, physical and chemical properties are periodic functions of their atomic weights.

A vapor is which state of matter?

Which of these elements has 5 valence electrons?

The mass number of an element is equal to ____.

The particles that are found in the nucleus of an atom are

Who predicted that all matter can behave as waves as well as particles?

Which category of elements is commonly used to make computer chips and solar cells ?

The chief advantage of the metric system over other systems of measurement is that it ____.

The principal quantum number indicates what property of an electron?

Which of the following is a physical change?

All atoms of the same element have the same ____.