2024 Fall Semester Exam Review Flashcardizz #1

Front

What does a bullseye with Low Accuracy & High Precision indicate?

Back

It indicates that the results are consistently close to each other but not close to the target value.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form or appearance of a substance without changing its composition, while a chemical change results in the formation of new substances.

Front

Define volume in scientific terms.

Back

Volume is the amount of space taken up by an object or substance.

Front

In covalent bonds, how do elements interact with electrons?

Back

In covalent bonds, elements share electrons.

Front

What does the prefix 'Di' signify when naming covalent compounds?

Back

The prefix 'Di' signifies that there are 2 atoms of that element in the compound.

Front

What is the definition of accuracy in measurements?

Back

Accuracy refers to how close a measured value is to the actual (true) value.

Front

What is the definition of precision in measurements?

Back

Precision refers to how close the measured values are to each other, regardless of whether they are close to the true value.

Front

Give an example of a physical change.

Back

Melting ice cream on a sunny day is an example of a physical change.

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons.

Front

What is the significance of prefixes in naming covalent compounds?

Back

Prefixes indicate the number of atoms of each element present in the compound.