PS Ch 2 Review

Matter

100

Matter has these two properties.

What are has mass and takes up space?

200

These are the three phases that matter exists in.

What are solid, liquid, and gas?

300

This is the smallest unit of an element that contains the properties of that element.

What is an atom?

400

A molecule of glucose (C₆H₁₂O₆) has this many oxygen atoms.

What is 6?

500

The chemical formula for H₂SO₄ contains this many atoms.

What is 7?

Matter 2

100

This is made up of two or more atoms of different elements. 

What is a molecule?

200

A compound has a ________ composition, where a mixture does not.

What is fixed?

300

Different substances in a mixture ____________.

What is retain their properties and can be physically separated?

400

The smallest piece of a substance that still retains the properties of that substance is a _________.

What is a molecule?

500

A substance that cannot be broken down into simpler substances is a ________________.

What is an element?

PS - Why is it not a compound?

Properties

100

One of helium's physical properties is this.

What is lighter than air?

200

This is an example of a physical property.

What are color, density, freezing point, boiling point, 

300

This is a physical property of gold.

What is a heavy density?

400

This is a chemical property of iron.

What is its ability to rust?

500

Reactivity is one of copper's ____________ properties.

What is chemical?

Changes

100

These are some types of physical changes.

What are freezing, boiling, melting, bending, evaporating, and dissolving?

200

Digesting food is an example of a _____________ change.

What is chemical?

300

Melting ice is an example of a ____________ change.

What is physical?

400

This is one sign of a chemical change.

What is color change, temperature change, produces a gas, produces a precipitate, or produces an odor.

500

This is the only way to reverse a chemical change.

What is another chemical change?

Math

100

You have a rock with a volume of 15cm³ and a mass of 45 g. This is its density.

What is 3.0 g/cm³?

200

You have a liquid with a volume of 0.5 L and a mass of 352 g. This is its density.

What is 700 g/L?

300

This is the mass of a 164.5 cm³ block of an unknown material, given its density is 3.1 g/cm³.

What is 510 g/cm³?

400

Find the volume of a cube that has a mass of 24.3 g and a density of 0.9 g/cm³.

What is 2.7 x 10¹ cm³?

500

This is the volume of a substance with a mass of 300 g and a density of 1.2 g/cm³.

What is 2.5 x 10² cm³?