Introduction to Matter

a measure of the force of gravity on an object

Which description about the structure of the atom is incorrect?

Why is a person’s weight on the moon only ⅙ of the weight on Earth?

rust forming on an iron nail

2 or more substances that are together in the same place but not chemically bonded

pizza

In general, as temperature increases, density increases.

anything that has mass and takes up space

Which of the following is an exothermic change?

The law of conservation of mass/energy states that

the amount of matter in an object

2 or more elements that are chemically combined in a set ratio

In the chemical formula H2O, how many oxygen atoms are present?

Mass changes with the amount of gravity acting on an object.

a substance made up of only 1 type of atom - cannot be broken down into different substances

A change to matter involves a change in energy.

reacts with acid

Different substances are made of different atoms.

the total energy of the motion of all particles in an object

a measure of the mass of a material in a given volume

boiling point

ability to burn (flammability)

oxygen (O)

water (H₂O)

the basic unit of matter

Which unit is NOT used for volume?

The density of water is 1.00 g/mL. What happens to copper if dropped into water? *The density of copper is 8.96 g/mL.

melting point

Pepsi

Which of the following techniques can be used to separate mixtures?

a single kind of matter that has a specific makeup (composition)

a measure of how hot or cold something is (the average energy)

baking chocolate cupcakes

cutting an apple

What is the SI unit for mass?

salt dissolves in water

the ability to do work

Chemistry is the study of

2 or more atoms held together by chemical bonds

Each substance in a mixture keeps its own properties.

carbon dioxide (CO₂)

density

the amount of space that matter occupies

boiling a pot of water on the stove