Fall Final Practice Test

Front

What is the chemical name for SiCl4?

Back

Silicon tetrachloride.

Front

What is the combined mass of 1.12 g, 1.8 g, and 1.562 g expressed to the correct number of significant figures?

Back

4.5 g.

Front

What is the chemical formula for calcium phosphate?

Back

Ca3(PO4)2.

Front

Which subatomic particle has a positive charge and a mass of 1 amu?

Back

Proton.

Front

What is the chemical formula for bromine monofluoride?

Back

BrF.

Front

Define significant figures in measurements.

Back

Significant figures are the digits in a number that contribute to its precision, including all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

What is the mass of a neutron compared to a proton?

Back

A neutron has approximately the same mass as a proton, about 1 amu.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the formula for calculating the total mass of multiple samples?

Back

Total mass = mass1 + mass2 + mass3 + ...

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons between atoms, while covalent bonds involve the sharing of electrons.