Vocabulary
Anything that exists that takes up space and has weight.
What is matter?
The three types of particles that compose atoms.
What are protons, neutrons, and electrons?
One of the ways that you can tell that a chemical reaction has taken place.
What is changes in odor, changes in energy, changes in color, production of gases, or production of solids?
Ice cream making: salt is added to the ice inside the bag for this reason.
What is salt lowers the freezing temperature of ice?
Water does this when it comes to a boil.
What is evaporate?
The word that refers to the amount of matter in an object.
What is mass?
Protons and neutrons make up the center of the atom, known as this.
What is the nucleus?
When the physical properties of a piece of matter have changed in some way, this type of change has occurred.
What is a physical change?
When the coating of steel wool is dissolved in vinegar, this type of reaction occurs when the steel wool hits the air, causing rust to develop.
What is a chemical reaction?
When a chemical change occurs and energy is released, it is this type of reaction.
What is exothermic?
BONUS: What is the other type?
The four types of matter are solids, liquids, gases, and this rare type.
What are plasmas?
Out of the three particles that make up atoms, these are the ones that do not have a charge.
What are neutrons?
The boiling point of water is this temperature.
212 degrees Fahrenheit.
The experiment in which we mixed plaster of paris in three different solutions - this change took place indicating a chemical reaction.
What is a temperature change?
magnesium + oxygen = magnesium oxide.
In the equation above, this is the product.
What is magnesium oxide?
The process in which a solid changes directly into a gas.
An atom has 4 protons and 2 electrons. The charge of the atom is this.
What is +2
The formation of an icicle is this type of change.
What is a physical change?
When the steel wool rusted, this chemical equation was seen in real life: iron + oxygen = iron oxide. These are the reactants in the equation.
What are iron and oxygen?
When you place a solute like sugar or salt in water, it will do this.
What is dissolve?
The freezing/melting point of water is this temperature.
What is 32 degrees Fahrenheit?
Electrons do this, traveling around the nucleus continuously.
What is orbit?
The process in which stalactites (cave icicles) form by minerals in water dripping and hardening over a long period of time is this type of change in matter.
What is a chemical change?
What is an exothermic reaction?
The law that states that when matter undergoes a chemical change, the mass of the substances will not change.
What is the law of the conservation of mass?