7th Grade Chemistry and Matter

The atomic number of an element is based on the

From an element's location in the periodic table, you can predict

What information in the periodic table indicates the number of protons in an atom?

How do liquid water, ice, and water vapor differ from each other?

Substances that CANNOT be broken down chemically into other substances are

Most metals are not

All elements are composed of extremely small particles called

Which part of the atom move around the nucleus?

Anything that has mass and takes up space is called

One example of a physical change is

In an atom, the number of protons equals the number of

One example of a chemical change is

Because atoms are so small,

At room temperature, more than half of the nonmetals elements are

Which group contains the most elements?

If you heat a liquid and measure the temperature at which it boils, you are measuring a(n)

Which particles in atoms have a negative electric charge?

If you describe methane as a gas that easily catches fire, you are describing a

A material is said to be ductile if it

Which group of elements shares characteristics with both metals and nonmetals?