What has both physical and chemical properties? What is A) Matter, B) Volume, C) Density, or D) Weight?
What is A) Matter?
100
In a chemical reaction, the original substances that change are called the what.
What is reactants?
100
What is a substance that cannot be broken down into simpler substances by physical or chemical means?
What is element?
100
What organizes all the known elements by atomic number
What is periodic table?
100
Most elements in the table are what?
What is metals?
200
What are three physical properties?
What is mass, volume, and density?
200
The new substances that form from a chemical reaction are called the what?
What is products?
200
What is the smallest unit of an element that has the chemical peoperties of that element?
What is atom?
200
Scientists put the elements on the periodic table into what three main groups?
What is metals, nonmetals, and metalloids?
200
A what is a combination of two or more substances in which the chemical properties of the substances do not change?
What is mixture?
300
What is the difference between a physical and chemical change.
What is a change in physical properties of a substance without changing the substance itself? Chemical change is a reaction between substances that result in new substances with different chemical properties being formed.
300
What is the difference between reactants and products?
What is one of the original substances in a chemical reaction? What is one of the substances formed from a chemical reaction?
300
When two or more atoms combine to form a new substance , those atoms form a new substance called a what?
What is compound?
300
WHat does malleable mean?
What is able to be pounded into thin sheets?
300
The periodic table is organized also by what?
What is reactivity?
400
Give an example of a physical and chemical change.
What is glass breaking and baking a cake?
400
A sign that a reaction is taking place is called what? A) Conservation of matter, B) Indication,
C) Chemical reaction, or D) Exothermic
What is B) Indication
400
Each unit of the compound is called a what?
What is molecule?
400
What does ductile mean?
What is able to be drwan into wires?
400
Metalloids have some properties of metals and what?
What is nonmetals
500
Is ice melting a physical or chemical change? Explain.
What is Physical change? It is a physical change because its changing physical properties such as volume and mass, without changing its substance.
500
What is the difference between endothermic and exothermic?
What is heat being absorbed? What is heat exiting?
500
A what tells you the types and the numbers of atoms in a single molecule?
What is chemical formula?
500
What is the first elemnet on the periodic table?
What is Hydrogen?
500
What is a mixture in which one substance dissolves into another substance?