Structure of an Atom
Has a p+ charge and is found in the nucleus
What is a proton
This is the energy an object possesses because of its motion.
What is kinetic energy.
This is the smallest particle of an element that has the properties of that element.
What is an atom.
This man invented the atomic theory.
Who was John Dalton
I have an atomic mass of 40.078 and an atomic number of 20 so that makes me this element.
What is calcium.
Has electrons in orbit around the nucleus.
The particles in a gas are in constant, ___________ motion
What is random.
This is composed of Mixtures (heterogeneous and homogeneous) and Pure Substances (compounds and elements)-Anything that has mass or volume is this.
What is matter.
All matter is composed of atoms; there is a point where the smallest piece of the matter would be an atom.
What is the atomic theory
These are the units used most commonly for density.
What are g/mL.
Has n0 charge and is found in the nucleus.
What is a neutron.
Particles in this state are very close together, they slide past and revolve around each other
What is a liquid
The amount of mass in a given volume measured in g/mL or g/cm2
What is density
A scientific explanation of the behaivor of matter based on all matter being made of particles that possess kinetic energy.
What is the Kinetic Molecular Theory
If the mass of an object is 10g and the volume is 5mL, the density is this.
What is 2g/mL.
Has an e- charge and is found in energy shells.
What is an electron.
In this state particles are very far apart; they move quickly, randomly, and in straight lines.
What is a gas.
This is the ability of matter to react with other substances (acids, oxygen, lacks reactivity, combustable)
What is a chemical property.
This man described the atom as a tiny, dense, positively charged core called a nucleus, where most of the mass is concentrated, around which electrons circulate at some distance, like how planets revolve around the Sun.
Who was Rutherford
The density of a cube is 250g/mL and it can hold a volume of 10mL. So that would make my mass this.
What is 2500g.
COntains the mass of the atom and contains protons and neutrons.
What is a nucleus.
In this state, particles are very close together; they vibrate but do not move around-strongly attracted in a rigid structure.
What is a solid
What is a physical property
J.J. Thomson's experiments with cathode ray tubes showed this.
What is that all atoms contain tiny negatively charged subatomic particles or electrons.
I am the lighest element
What is hydrogen