The center of an atom is a nucleus. In the nucleus, there are 2 subatomic particles: protons (positive charge) and neutrons (neutral charge). Outside of the nucleus are electrons. The energy of an electron is in shells. An atom is a single nucleus with a positive charge surrounded by a cloud of negatively charged electrons.[…]
A circuit is a complete path that electricity flows through. There is a source of electricity (battery). Conductors are the materials that allow electric current to pass through them easily. Conductors like the positive and negative ends of a battery. In a closed circuit, the electricity flows without any interruptions. Ohm’s Law: Voltage (V); Current[…]
Types of Electronic Bonds 1. Covalent bonds – 2 or more elements share electrons (ex: H2O) 2. Ionic bonds – strongest bonding. One element takes an electron from another molecule (ex: NaCl) 3. Hydrogen bonds – weakest form of bonding. Hydrogen atom interacts with an electronegative atom like nitrogen, oxygen, or fluorine
1. Newton’s First Law: An object that is at rest will stay at rest unless a force acts upon it. An object that is in motion will not change its velocity unless a force acts upon it. 2. Newton’s Second Law: Force = mass * acceleration. The second law states that the rate of change[…]
x² + y² = 167 y = −3x Solve for x and y.
Find the value of x: 4x + x + x + x + x − 9 − 3 = 8 + x + x + x
y > 4x − 2 6x > 15 Find the y-coordinates of all the points that satisfy this system of inequalities.
z(x) = 5x − 2 h(x) = 2 − 3z(x) What is the value of h(1)?
In a random sample of 350 cars of a certain model, 8 have a manufacturing defect. At this rate, how many of 5,000 cars of this model will have a defect?
A block in the shape of a right rectangular prism has dimensions 40 cm by 35 cm by 28 cm. The block has a density of 3.2 grams per cubic centimeter. What is the mass of the block in grams?