Unit 1 H Chem Flashcard Review

Front

How do you write 1001 in scientific notation?

Back

1.001 x 10^3

Front

Write 0.04967 to 2 significant figures.

Back

0.050

Front

Which words best describe O2-?

Back

ion

Front

A substance in which all the atoms are the same is called?

Back

element

Front

Calculate the answer to the following problem and round the final answer to the correct number of sig figs: 4.627 / 0.00371 = ?

Back

1250

Front

What is scientific notation?

Back

A way to express numbers as a product of a number between 1 and 10 and a power of 10.

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 portion.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition and appearance throughout.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume