Matter Basics
What is anything that has mass and takes up space?
Matter
Which particle has a positive charge?
proton
What tool is used to measure mass?
Balance
A property that can be observed without changing the substance is called what?
Physical Property
When atoms of different elements combine, they form a ________.
Compound
What are the building blocks of matter?
Atoms
Which particle has no charge?
Neutron
What tool is used to measure liquid volume?
Graduated cylinder
The ability of wood to burn is an example of what type of property?
Chemical Property
A combination of substances not chemically combined is called a ________.
Mixture
What is a pure substance made of only one type of atom?
Element
Which particle has a negative charge and is found outside the nucleus?
Electron
Write the formula for density.
Mass ÷ Volume
Give two examples of physical properties.
Color, shape, density, mass, melting point (any 2)
Which type of mixture is evenly mixed throughout?
Homogeneous mixture (solution)
Atoms of the same element with different numbers of neutrons are called what?
Isotopes
What is the sum of protons and neutrons in an atom called?
Mass Number
A rock has a mass of 60 g and a volume of 20 cm³. What is its density?
3 g/cm³
Give two examples of chemical properties.
Flammability, reactivity, rusting, ability to form new substances (any 2)
Which type of mixture is not evenly mixed?
Heterogeneous mixture
What is the number of protons in the nucleus called?
Atomic Number
What makes one element different from another: number of protons, neutrons, or electrons?
Number of Protons
If an object has a density of 0.8 g/cm³, will it float or sink in water?
Float
Explain the difference between physical and chemical properties.
Answer: Physical can be observed without changing the substance; chemical describes ability to form new substances
What is the difference between a compound and a mixture?
Compounds are chemically bonded; mixtures are not chemically combined