Chemistry Unit 1 Review

Metalloids are elements that

The smallest unit of an element that maintains all of the properties of that element is a(n)?

How many elements are in group 17 (Halogens)?

What are isotopes?

Which mg. quantity contains a total of 4 sig.figs?

A neutral atom of ³⁷Cl has

Element X has 90% X-35 atoms, 8.0% X-37 atoms, and 2.0% X-38 atoms. What is the avg atomicmass

Which notations represent different isotopes of the element sodium?

Which of the following is the abbreviation for the element iron?

the symbol for the element in period 4, group 7 is

Choose the answer which shows the proper degree of precision? 2.1 g + 33.566 g + 12.22 g

1) The atomic number of an atom is the number of ______ in the atom's nucleus.

What are the horizontal rows of the Periodic Table called?

How many sig figs: 0.010?

Select the correct answer choice

What contribution did John Dalton make to atomic theory?

Apply rules for sig. figs. How should the answer look? 35.7 + 432.33 + 5142.312 = 5610.342

The phase change from a solid to a gas or vapor without changing to a liquid first is

How many significant figures are in 51.006 ?

A triple beam balance is used to

What family of elements is in the right-most column of the Periodic Table?

What is the following number in standard decimal notation? 0.241 X 10^3

How was Dmitri Mendeleev's periodic table arranged?

Phosphorus has an atomic # of 15 and a mass number of 31. How many neutrons does it contain?

What group on the Periodic Table includes elements that are stable?

What is the volume of the liquid in this graduated cylinder?

Orbitals are regions of space around the nucleus where a/an ____ is likely to be located

An atom that has 13 protons and 15 neutrons is an isotope of the element

Which pair of elements would most likely have a similar chemical behavior?

What is the atomic number of Chlorine?

Which element is malleable and a good conductor of electricity at STP?

Atoms of ¹⁶O, ¹⁷O, and ¹⁸O have the same number of

Ernest Rutherford is responsible for the discovery of the

Which of these are written in scientific notation?

Which symbols represent atoms that are isotopes?

The elements known as the alkaline earth metals are found in Group

The phase change in which a substance changes from a solid to a liquid is

Neils Bohr is responsible for placing the electrons

What is the metric unit for volume?

What is the number of electrons in an atom that has 3 protons and 4 neutrons?