Matter & Its Building Blocks
The smallest unit of matter?
What is an atom?
A state of matter that has particles that are packed closely together
What is a solid?
This is an example of a substance: carbon, water, or seawater?
What is carbon?
This is always conserved during a physical change
What is mass?
Which property varies between two different-sized samples of the same substance?
What is volume?
A substance made of only one type of atom is called what?
What is an element?
An example of a size independent property is either mass, density, or conductivity
What is conductivity?
A type of mixture has substances that are not evenly distributed
What is a heterogeneous mixture?
Which sign shows a chemical change has taken place? change in color, bubbles, or a new substance has formed
A new substance has formed
This can change based on location, mass does not change.
What is weight?
A combination of two or more substances that are physically blended together
What is a mixture?
A state of matter has particles that move quickly
What is a gas?
Aluminum and carbon dioxide are classified as this type of matter
What are substances?
If 10 g of salt is dissolved in 90 g of water, what is the final mass of the mixture?
100 g
The amount of space something takes up
What is volume?
What term describes anything that has mass and takes up space?
What is matter?
The term for a property that depends on the amount of substance present, such as volume
What is a size-dependent property?
A type of mixture in which individual substances are evenly mixed
What is a homogeneous mixture?
What happens to the speed of a chemical reaction when the temperature increases?
The chemical reaction speeds up
What is the formula for density?
Density = mass/volume
Water is a compound that includes 2 hydrogen atoms and 1 oxygen atom. When water is written as, "H2O", this is referred to as what in chemistry?
What is a chemical formula?
What is the term for when one substances mixes evenly into another substance?
What is dissolving?
A physical property that can help separate a mixture of iron and sand
What is magnetism?
What is the result when matter undergoes a chemical change?
A new substance is formed
A block has a volume of 10 mL and a mass of 50 g. What is its density?
5.0 g/mL is the density