Semester 1 test reg chemistry 2024-2025 E

Front

What is scientific notation?

Back

A way of expressing numbers that are too large or too small to be conveniently written in decimal form, using powers of ten.

Front

Convert 0.00000398 to scientific notation.

Back

3.98 x 10^-6

Front

What is the molecular formula for carbon tetrachloride?

Back

CCl4

Front

How is the compound HgI2 correctly named?

Back

Mercury (II) iodide

Front

What is the formula for barium chlorate?

Back

Ba(ClO3)2

Front

How many significant figures are in the number 25,001.0?

Back

Six significant figures.

Front

Define significant figures.

Back

Digits in a number that contribute to its precision, including all non-zero digits, zeros between significant digits, and trailing zeros in the decimal part.

Front

What is the significance of the coefficient in scientific notation?

Back

The coefficient must be a number greater than or equal to 1 and less than 10.

Front

How do you determine the number of significant figures in a measurement?

Back

Count all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

What is the difference between ionic and covalent compounds?

Back

Ionic compounds are formed by the transfer of electrons between atoms, while covalent compounds are formed by the sharing of electrons.