Unit 1 Test Review

The atomic number of phosphorus is 15. How many valence electrons does a phosphorus atom have?

What is the piece of lab equipment shown below?

Which pair of elements have the similar properties based on their locations on the per table?

The mass of the rock is 200 g. What is the density of the rock?

The copper cycle, shown below, is a demonstration of what principle of chemistry?

At room temperature,most of the elements in the periodic table are

KCl(aq) is added to Pb(NO₃)₂(aq), resulting in KNO₃(aq) and which yellow solid?

What is the correct formula for lithium oxide?

In 1911 Rutherford shot alpha part at thin sheet of atoms. What did he conclude about atoms?

What is the correct reading for the volume of water in the graduated cylinder?

Which of these describes antimony’s location on the periodic table?

A substance is composed purely of a Group 2 element. Which type of bonding does it have?

What isotope is produced by the alpha decay of a nucleus of gadolinium-148?

What process in the Sun causes the production of large amounts of energy?

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p¹?

What is the correct way to represent a solution of copper (II) nitrate?

80% boron-11, 20% boron=10. What's the average atomic mass?

Based on their chemical structures, which of these materials is likely to be soluble in water?

When atoms are not stable and emit small particles, they are considered to be__________.

If this decays by emitting a beta particle, what would be the name of the isotope produced?

Which metals tend to be most reactive?

What is different about the three different isotopes shown below?

The picture will show a diagram of an aluminum atom. What charge does an ion of aluminum have?

Which of these elements has two valence electrons?

Isotopes of an element differ only in the number of what subatomic particle?