Solids, Liquids, Gas
Which state of matter has a definite shape and definite volume?
Solid
Who created the periodic table?
Dmitri Mendeleev
What is one sign that a chemical change has occurred?
Color change, gas bubbles, temperature change, light, or new substance formed.
What force resists motion between two surfaces that touch?
Friction
Which state of matter has a definite volume but takes the shape of its container?
Liquid
Which element has the symbol “O”?
Oxygen
If two substances mix and form bubbles, what does that tell you?
A gas formed
What does Newton’s Third Law state?
For every action, there is an equal and opposite reaction.
When a liquid freezes, what happens to the motion of its particles and the energy?
They slow down and move closer together.
What is the chemical symbol for silver?
Ag
Why is rust on a bike a chemical change?
A new substance formed
A 12 N force pushes right, and an 8 N force pushes left. What is the net force and direction?
4 N to the right.
Describe how particles move in a solid, liquid, and gas
Solid particles do not move a lot, they vibrate. Liquid particles have room to move, and gasses have the most energy
Hydrogen
When a glow stick lights up, how do you know a chemical reaction is happening?
New light energy is released
What is the difference between balanced and unbalanced forces?
Balanced forces are equal and opposite direction, unbalanced forces are unequal and can be in the same diection
Rank solids, liquids, and gases from lowest to highest kinetic energy of their particles.
Solid → Liquid → Gas.
What are the three sections of the periodic table and where are they located?
Metals- left
Metalliods- Zigzag
Non-Metals- Right
Explain why cooking an egg is a chemical change.
Heat changes the proteins permanently — a new substance forms.
You push against a wall, but the wall doesn’t move. What does the wall do?
It pushes back with an equal and opposite force.