6th Grade Science- Chapter 7 Test Review

When positively and negatively charged ions attract each other they form a(n) _______

chemical symbols and numbers abbreviating the name of a compound

the compound H2CO3 has ____ atom(s) of carbon in it

baking soda, soap, and bleach are not BASES

Electrons circle atoms

you can determine the concentration of acids and bases in a solution by using ______

the process in which different types of atoms join and form a new substance

scientist ________ developed a simplified model of an atom

Carbon is the ______

ACIDS can burn; be corrosive

in a(n) ________ atoms share electrons

BASES have a bitter taste

the study of matter- what it's made of, it's usual characteristics, how it reacts to other matter

the sum of the number of protons and neutrons results in an atom's approximate ________

lemons, vinegar, and tomato juice are ACIDS

What is in the nucleus?

a substance that changes color when exposed to acid or base solutions is called a(n) ______

BASES are not slippery to touch

an atom that has gained or lost electrons

the smallest piece of an element that can be recognized as that element

based on the number of protons in the nucleus

a ______ reaction occurs when a compound is broken down into simpler compounds

an ionic compound produced from a reaction between an acid and a base

22.98977 is Sodium's ______

what does the number show?

ACIDS have a sweet, rather than sour, taste

Which one is a chemical symbol?

a substance, only one kind of atom

the scientist ________ developed the periodic table of the elements