A change that produces one or more new substances is what kind of change?
What is a chemical change.
100
The smallest particle of an element is called an_______?
What is atom.
100
Liter, cm3, mL are units to measure what?
What is volume.
100
Define Matter.
What is anythingg that has mass and takes up space(volume).
200
Which type of matter consists of 2 or more substances that are not chemically combined?
What is a mixture
200
Which of the following is an example of a physical change?
a. burning paper
b. rusting of iron
c. mixing a milkshake
d. baking cookies
What is C.
200
Who was the first person to believe matter was made of atoms?
What is Democritus
200
What could be a SI unit for mass?
What is g, mg, kg....
200
If an object has less density than water, will it sink or float?
What is float.
300
Which of the following statements do not describe a compound?
a. 2 or more elements
b. chemically combine
c. specific ratio
d. keep individual properties
What is D.
300
Changes in states of matter (solid to liquid)are examples of what type of change?
What is physical change.
300
A group of atoms that are bonded together are called?
What is molecule.
300
The measurement of how much matter an object contains is a measure of what?
What is mass.
300
What does a chemical change produce?
What is a new substance.
400
Give an example of an
ELEMENT
COMPOUND
MIXTURE
various answers
400
List a physical and chemical change of Iron.
What is various answers... melt(P)
rust(C)
400
What do chemical bonds do?
What is hold atoms together.
400
How do you calculate density?
What is mass divided by volume.
400
Define chemistry?
What is the stdu of matter and how it changes.
500
What are the 2 ways a mixture differs from a compound?
What is keep its individual properties(do not chemically combine) and
not present in specific ratios
500
State 4 of the 6 examples pf properties of matter.
What is hardness, shape, flammability, color, temperature, and texture
500
Dalton had 6 beliefs about atoms. These beliefs became known as Dalton's Atomic theory. State 4 of Dalton's 6 beliefs.
What is 1. can't be broken down 2. in an element, all atoms are alike 3. different elements have different atoms 4. each atom has a unique mass 5. atoms combine to form compounds 6. atoms in a compound are in a specific ratio
500
How would you find the density of a rock?
What is measure mass on a scale, find volume using water displacement, divide the 2 values.
500
Tell me 4 things about the test that were listed on the test information sheet.