atom
What two types of particles make up the nucleus of an atom?
protons and neutrons
The smallest unit of matter that retains the properties of an element.
Atom
If a substance has a mass of 40 g and a volume of 8 cm³, what is its density?
5 g/cm³
Breaking a glass is an example of this type of change.
physical change
A combination of substances that are physically combined but not chemically bonded.
Mixture
Oxygen has an atomic number of 8. How many protons does it have?
8 protons
The amount of space an object takes up.
Volume
A sample has a mass of 50 g and a volume of 25 cm³. What is its density?
2 g/cm³
A CHARACTERISTIC that can be observed without changing a substance.
Physical property
A process used to separate substances in a mixture using boiling points.
Distillation
Magnesium has an atomic number of 12 and an atomic mass of 24. How many neutrons does it have?
12 neutrons
The amount of matter in an object.
Mass
A mineral has a mass of 72 g and a volume of 9 cm³. What is its density?
8 g/cm³
Rusting iron is an example of this type of change.
Chemical change
What is the equation for Density
Mass/Volume
Carbon has an atomic mass of 12 and an atomic number of 6. How many neutrons does it have?
6 neutrons
This scientific law states that matter cannot be created or destroyed in a chemical reaction and that the mass of the reactants equals the mass of the products.
Law of Conservation of Mass
A metal sample has a mass of 45 g and a density of 9 g/cm³. What is the volume of the sample?
5 cm³
Burning wood is an example of this type of change.
chemical change
This number on the periodic table tells you how many protons are in the nucleus of an atom.
Atomic number
Aluminum has an atomic number of 13 and an atomic mass of 27. How many neutrons does it have?
14 neutrons
This is the force of gravity acting on an object and can change depending on the planet or moon you are on.
Weight
A metal block has a density of 4 g/cm³ and a volume of 10 cm³. What is the mass of the block?
40 grams
Provide an example of a physical and chemical change.
answers will vary. Physical change- paper crumbling or glass shatering. Chemical- cooking, or baking, or nails rusting, or vinegar and baking soda reacting.
In the periodic table, what is the difference between a period and a group
a period is a horizontal row of elements, while a group is a vertical column of elements that share similar chemical properties